diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/KakaoTestController.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/KakaoTestController.java
index aefab7d9..cc46af58 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/KakaoTestController.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/KakaoTestController.java
@@ -2,27 +2,99 @@
 
 import com.back.web7_9_codecrete_be.domain.location.dto.KakaoLocalResponse;
 import com.back.web7_9_codecrete_be.domain.location.service.KakaoLocalService;
+import com.back.web7_9_codecrete_be.global.rsData.RsData;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 import java.util.List;
 
+@Tag(name = "Location - Kakao", description = "카카오 로컬 API 연동(주변 음식점 조회, 좌표→주소 변환) 관련 엔드포인트")
 @RestController
-@RequestMapping("/api/test")
+@RequestMapping("/api/v1/location/kakao")
 @RequiredArgsConstructor
 public class KakaoTestController {
 
     private final KakaoLocalService kakaoLocalService;
 
-    @GetMapping("/kakao-restaurants")
+    @Operation(
+            summary = "주변 음식점 조회(테스트)",
+            description = "테스트용 하드코딩 좌표(서울 시청 근처)로 카카오 로컬에서 주변 음식점을 조회합니다., 하드코딩 좌표 : lat - 37.5665, lng -126.9780"
+    )
+    @ApiResponse(responseCode = "200", description = "조회 성공",
+            content = @Content(schema = @Schema(implementation = KakaoLocalResponse.Document.class)))
+    @GetMapping("/restaurants")
+
     public List<KakaoLocalResponse.Document> testKakaoRestaurants() {
 
-        // ✅ 테스트용 하드코딩 좌표 (서울 시청 근처)
         double lat = 37.5665;
         double lng = 126.9780;
 
         return kakaoLocalService.searchNearbyRestaurants(lat, lng);
     }
+
+    @Operation(
+            summary = "주변 음식점 조회(테스트)",
+            description = "테스트용 좌표(서울 시청 근처)로 카카오 로컬에서 주변 음식점을 조회합니다, 좌표는 입력하면 됩니다." +
+                    "예시 : http://localhost:8080/api/v1/location/kakao/restaurant?lat=37.5665&lng=126.9780"
+    )
+    @PostMapping("/restaurant")
+    public List<KakaoLocalResponse.Document> KakaoRestaurants(
+            @RequestParam double lat,
+            @RequestParam double lng
+    ){
+        return kakaoLocalService.searchNearbyRestaurants(lat, lng);
+    }
+
+    @Operation(
+            summary = "주변 카페 조회(테스트)",
+            description = "테스트용 하드코딩 좌표(서울 시청 근처)로 카카오 로컬에서 주변 카페를 조회합니다., 하드코딩 좌표 : lat - 37.5665, lng -126.9780"
+    )
+    @ApiResponse(responseCode = "200", description = "조회 성공",
+            content = @Content(schema = @Schema(implementation = KakaoLocalResponse.Document.class)))
+    @GetMapping("/cafes")
+    public List<KakaoLocalResponse.Document> testKakaoCafes() {
+
+        double lat = 37.5665;
+        double lng = 126.9780;
+
+        return kakaoLocalService.searchNearbyCafes(lat, lng);
+    }
+
+    @Operation(
+            summary = "주변 카페 조회(테스트)",
+            description = "테스트용 좌표(서울 시청 근처)로 카카오 로컬에서 주변 카페를 조회합니다, 좌표는 입력하면 됩니다." +
+                    "예시 : http://localhost:8080/api/v1/location/kakao/cafes?lat=37.5665&lng=126.9780"
+    )
+    @PostMapping("/cafes")
+    public List<KakaoLocalResponse.Document> KakaoCafes(
+            @RequestParam double lat,
+            @RequestParam double lng
+    ){
+        return kakaoLocalService.searchNearbyCafes(lat, lng);
+    }
+
+
+    @Operation(
+            summary = "좌표를 주소로 변환",
+            description = "위도(lat), 경도(lon)를 받아 카카오 API로 주소명(address_name)을 반환합니다."
+    )
+    @ApiResponse(responseCode = "200", description = "변환 성공",
+            content = @Content(schema = @Schema(implementation = RsData.class)))
+    @GetMapping("/coord2address")
+    public RsData<String> coord2Address(
+            @Parameter(description = "위도(latitude)", example = "37.5665", required = true)
+            @RequestParam double lat,
+
+            @Parameter(description = "경도(longitude)", example = "126.9780", required = true)
+            @RequestParam double lon
+    ) {
+        String addressName = kakaoLocalService.coordinateToAddressName(lat, lon);
+        return RsData.success("좌표를 주소로 변환했습니다.", addressName);
+    }
 }
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/LocationController.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/LocationController.java
index fe1872d0..b38a28c3 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/LocationController.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/LocationController.java
@@ -1,15 +1,59 @@
 package com.back.web7_9_codecrete_be.domain.location.controller;
 
+import com.back.web7_9_codecrete_be.domain.location.dto.request.LocationRequestDto;
+import com.back.web7_9_codecrete_be.domain.location.dto.response.LocationResponseDto;
 import com.back.web7_9_codecrete_be.domain.location.service.LocationService;
+import com.back.web7_9_codecrete_be.domain.users.entity.User;
+import com.back.web7_9_codecrete_be.global.rq.Rq;
+import com.back.web7_9_codecrete_be.global.rsData.RsData;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 @RestController
-@RequestMapping("/api/v1/location")
+@RequestMapping("/api/v1/location/my")
 @RequiredArgsConstructor
+@Tag(name = "Location", description = "위치(Location) 관련 API")
 public class LocationController {
 
     private final LocationService locationService;
+    private final Rq rq;
 
+    @GetMapping()
+    @Operation(summary = "사용자 위치 조회", description = "사용자의 위치 정보를 조회합니다.")
+    public RsData<LocationResponseDto> getMyLocation(
+    ){
+        User user = rq.getUser();
+        return RsData.success("내 위치정보를 조회합니다", locationService.getLocation(user));
+    }
+
+
+    @PostMapping()
+    @Operation(summary = "사용자 위치 저장", description = "사용자의 위치 정보를 저장합니다.")
+    public RsData<LocationResponseDto> saveMyLocation(
+            @RequestBody LocationRequestDto locationRequestDto
+            ){
+        User user = rq.getUser();
+        return RsData.success("내 위치정보를 저장했습니다.", locationService.saveLocation(locationRequestDto, user));
+    }
+
+
+    @PatchMapping
+    @Operation(summary = "사용자 위치 수정", description = "사용자의 위치 정보를 수정합니다.")
+    public RsData<LocationResponseDto> modifyMyLocation(
+            @RequestBody LocationRequestDto locationRequestDto
+            ){
+        User user = rq.getUser();
+        return RsData.success("내 위치정보를 수정했습니다.", locationService.modifyLocation(locationRequestDto, user));
+    }
+
+    @DeleteMapping
+    @Operation(summary = "사용자 위치 삭제", description = "사용자의 위치 정보를 삭제합니다.")
+    public RsData<Void> deleteMyLocation(
+    ){
+        User user = rq.getUser();
+        locationService.removeLocation(user);
+        return RsData.success("내 위치정보를 삭제했습니다.", null);
+    }
 }
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/TmapController.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/TmapController.java
index 46551541..6119270f 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/TmapController.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/controller/TmapController.java
@@ -1,26 +1,74 @@
 package com.back.web7_9_codecrete_be.domain.location.controller;
 
 import com.back.web7_9_codecrete_be.domain.location.service.TmapService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import lombok.RequiredArgsConstructor;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
+@Tag(
+        name = "Location - Tmap",
+        description = "Tmap 대중교통 길찾기 API 연동"
+)
 @RestController
 @RequiredArgsConstructor
-@RequestMapping("/api/tmap")
+@RequestMapping("/api/v1/location")
 public class TmapController {
 
     private final TmapService tmapService;
 
-    @GetMapping("/transit")
+    @Operation(
+            summary = "대중교통 경로 조회",
+            description = """
+            출발지(startX, startY)와 도착지(endX, endY) 좌표를 기반으로  
+            Tmap 대중교통 API를 호출하여 경로 정보를 조회합니다.
+            """
+    )
+    @ApiResponse(
+            responseCode = "200",
+            description = "경로 조회 성공",
+            content = @Content(
+                    mediaType = "application/json",
+                    schema = @Schema(
+                            description = "Tmap 대중교통 경로 조회 결과(JSON 문자열)"
+                    )
+            )
+    )
+    @GetMapping("/tmap/transit")
     public String getTransit(
+
+            @Parameter(
+                    description = "출발지 경도 (longitude)",
+                    example = "126.9780",
+                    required = true
+            )
             @RequestParam double startX,
+
+            @Parameter(
+                    description = "출발지 위도 (latitude)",
+                    example = "37.5665",
+                    required = true
+            )
             @RequestParam double startY,
+
+            @Parameter(
+                    description = "도착지 경도 (longitude)",
+                    example = "127.0276",
+                    required = true
+            )
             @RequestParam double endX,
+
+            @Parameter(
+                    description = "도착지 위도 (latitude)",
+                    example = "37.4979",
+                    required = true
+            )
             @RequestParam double endY
     ) {
         return tmapService.getRoute(startX, startY, endX, endY);
     }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/KakaoCoordinateResponse.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/KakaoCoordinateResponse.java
new file mode 100644
index 00000000..d2dab475
--- /dev/null
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/KakaoCoordinateResponse.java
@@ -0,0 +1,71 @@
+package com.back.web7_9_codecrete_be.domain.location.dto;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+@Schema(description = "카카오 좌표 → 주소 변환 응답 DTO")
+public class KakaoCoordinateResponse {
+
+    @Schema(
+            description = "주소 변환 결과 목록",
+            example = "[]"
+    )
+    private List<Document> documents;
+
+    @Data
+    @Schema(description = "좌표 변환 결과 문서")
+    public static class Document {
+
+        @Schema(description = "지번 주소 정보")
+        private Address address;
+
+        @Schema(description = "도로명 주소 정보")
+        private RoadAddress road_address;
+    }
+
+    @Data
+    @Schema(description = "지번 주소 상세 정보")
+    public static class Address {
+
+        @Schema(description = "전체 지번 주소", example = "서울 중구 태평로1가 31")
+        private String address_name;
+
+        @Schema(description = "시/도", example = "서울")
+        private String region_1depth_name;
+
+        @Schema(description = "구", example = "중구")
+        private String region_2depth_name;
+
+        @Schema(description = "동", example = "태평로1가")
+        private String region_3depth_name;
+
+        @Schema(description = "산 여부 (Y/N)", example = "N")
+        private String mountain_yn;
+
+        @Schema(description = "본번", example = "31")
+        private String main_address_no;
+
+        @Schema(description = "부번", example = "0")
+        private String sub_address_no;
+    }
+
+    @Data
+    @Schema(description = "도로명 주소 상세 정보")
+    public static class RoadAddress {
+
+        @Schema(description = "전체 도로명 주소", example = "서울 중구 세종대로 110")
+        private String address_name;
+
+        @Schema(description = "도로명", example = "세종대로")
+        private String road_name;
+
+        @Schema(description = "건물명", example = "서울시청")
+        private String building_name;
+
+        @Schema(description = "우편번호", example = "04524")
+        private String zone_no;
+    }
+}
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/KakaoLocalResponse.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/KakaoLocalResponse.java
index c66f8318..46dcaf31 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/KakaoLocalResponse.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/KakaoLocalResponse.java
@@ -1,20 +1,37 @@
 package com.back.web7_9_codecrete_be.domain.location.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.util.List;
 
 @Data
+@Schema(description = "카카오 로컬 API 장소 검색 응답 DTO")
 public class KakaoLocalResponse {
+
+    @Schema(description = "장소 검색 결과 목록")
     private List<Document> documents;
 
     @Data
+    @Schema(description = "카카오 장소 정보")
     public static class Document {
+
+        @Schema(description = "장소명", example = "디라이프 스타일키친 광화문점")
         private String place_name;
-        private String x; // longitude
-        private String y; // latitude
+
+        @Schema(description = "경도(longitude)", example = "126.97826128583668")
+        private String x;
+
+        @Schema(description = "위도(latitude)", example = "37.56842610180289")
+        private String y;
+
+        @Schema(description = "도로명 주소", example = "서울 중구 세종대로 136")
         private String road_address_name;
+
+        @Schema(description = "지번 주소", example = "서울 중구 태평로1가 84")
         private String address_name;
+
+        @Schema(description = "카카오 장소 상세 URL", example = "http://place.map.kakao.com/444516464")
         private String place_url;
     }
-}
\ No newline at end of file
+}
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/TmapResponse.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/TmapResponse.java
index 2e248d8a..87121037 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/TmapResponse.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/TmapResponse.java
@@ -1,15 +1,31 @@
 package com.back.web7_9_codecrete_be.domain.location.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 @Data
+@Schema(description = "Tmap 대중교통 경로 조회 요청 DTO")
 public class TmapResponse {
 
+    @Schema(description = "출발지 경도 (longitude)", example = "126.9780")
     private String startX;
+
+    @Schema(description = "출발지 위도 (latitude)", example = "37.5665")
     private String startY;
+
+    @Schema(description = "도착지 경도 (longitude)", example = "127.0276")
     private String endX;
+
+    @Schema(description = "도착지 위도 (latitude)", example = "37.4979")
     private String endY;
-    private int count;          //최대 응답 결과 개수
-    private String format;      //출력포멧 : jsom, xml
 
+    @Schema(description = "최대 응답 결과 개수", example = "5")
+    private int count;
+
+    @Schema(
+            description = "응답 포맷 (json / xml)",
+            example = "json",
+            allowableValues = {"json", "xml"}
+    )
+    private String format;
 }
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/request/LocationRequestDto.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/request/LocationRequestDto.java
new file mode 100644
index 00000000..ae83bb9d
--- /dev/null
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/request/LocationRequestDto.java
@@ -0,0 +1,16 @@
+package com.back.web7_9_codecrete_be.domain.location.dto.request;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+
+@Getter
+@Schema(description = "위치 요청 DTO")
+public class LocationRequestDto {
+
+    @Schema(description = "위도", example = "37.566535")
+    private double lat;
+
+    @Schema(description = "경도", example = "126.9779692")
+    private double lon;
+
+}
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/response/LocationResponseDto.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/response/LocationResponseDto.java
new file mode 100644
index 00000000..075576ac
--- /dev/null
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/dto/response/LocationResponseDto.java
@@ -0,0 +1,30 @@
+package com.back.web7_9_codecrete_be.domain.location.dto.response;
+
+import com.back.web7_9_codecrete_be.domain.location.entity.Location;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+
+
+@Getter
+@AllArgsConstructor
+@Schema(description = "위치 응답 DTO")
+public class LocationResponseDto {
+
+    @Schema(description = "위도", example = "37.566535")
+    private double lat;
+    @Schema(description = "경도", example = "126.9779692")
+    private double lon;
+    @Schema(description = "주소", example = "서울특별시 중구 세종대로 110")
+    private String address;
+
+
+    public static LocationResponseDto from(Location location) {
+        return new LocationResponseDto(
+                location.getLat(),
+                location.getLon(),
+                location.getAddress()
+        );
+    }
+}
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/entity/Location.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/entity/Location.java
index a70fdba4..eae569fc 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/entity/Location.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/entity/Location.java
@@ -1,6 +1,7 @@
 package com.back.web7_9_codecrete_be.domain.location.entity;
 
 
+import com.back.web7_9_codecrete_be.domain.users.entity.User;
 import jakarta.persistence.*;
 import lombok.Getter;
 import lombok.NoArgsConstructor;
@@ -18,11 +19,11 @@ public class Location {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private Long id;
     // TODO : 추후 user Entity 보고 확인 예정 우선 주석 처리
-/*
+
     @ManyToOne
     @JoinColumn(name="user_id", nullable = false)
     private User user;
-*/
+
     @Column(length = 255)
     private String address;
 
@@ -32,4 +33,33 @@ public class Location {
     private double lat;
 
     private double lon;
+
+
+    @PrePersist
+    public void prePersist() {
+        this.modified_date = LocalDateTime.now(); // ⭐ insert 때도 채움
+    }
+
+    @PreUpdate
+    public void preUpdate() {
+        this.modified_date = LocalDateTime.now();
+    }
+
+    protected Location(User user, double lat, double lon, String address) {
+        this.user = user;
+        this.lat = lat;
+        this.lon = lon;
+        this.address = address;
+    }
+
+    public static Location create(User user, double lat, double lon, String addressName) {
+        return new Location(user, lat, lon, addressName);
+    }
+
+    public void update(double lat, double lon, String address) {
+
+        this.lat = lat;
+        this.lon = lon;
+        this.address = address;
+    }
 }
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/repository/LocationRepository.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/repository/LocationRepository.java
index 7c68fd91..3c526aa9 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/repository/LocationRepository.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/repository/LocationRepository.java
@@ -1,7 +1,13 @@
 package com.back.web7_9_codecrete_be.domain.location.repository;
 
 import com.back.web7_9_codecrete_be.domain.location.entity.Location;
+import com.back.web7_9_codecrete_be.domain.users.entity.User;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface LocationRepository extends JpaRepository<Location, Long> {
+
+
+    Location findByUser(User user);
+
+    boolean existsByUser(User user);
 }
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/KakaoLocalService.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/KakaoLocalService.java
index e6ff9ffb..b8299297 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/KakaoLocalService.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/KakaoLocalService.java
@@ -1,6 +1,9 @@
 package com.back.web7_9_codecrete_be.domain.location.service;
 
+import com.back.web7_9_codecrete_be.domain.location.dto.KakaoCoordinateResponse;
 import com.back.web7_9_codecrete_be.domain.location.dto.KakaoLocalResponse;
+import com.back.web7_9_codecrete_be.global.error.code.LocationErrorCode;
+import com.back.web7_9_codecrete_be.global.error.exception.BusinessException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
 import org.springframework.web.reactive.function.client.WebClient;
@@ -22,6 +25,7 @@ public List<KakaoLocalResponse.Document> searchNearbyRestaurants(double lat, dou
                         .queryParam("y", lat)
                         .queryParam("x", lng)
                         .queryParam("radius", 1000)  // 반경 1km
+                        .queryParam("sort", "distance")
                         .build()
                 )
                 .retrieve()
@@ -29,4 +33,56 @@ public List<KakaoLocalResponse.Document> searchNearbyRestaurants(double lat, dou
                 .block() // 동기 호출 (필요하면 비동기로 변경 가능)
                 .getDocuments();
     }
+    public List<KakaoLocalResponse.Document> searchNearbyCafes(double lat, double lng) {
+
+        return kakaoWebClient.get()
+                .uri(uriBuilder -> uriBuilder
+                        .path("/v2/local/search/keyword.json")
+                        .queryParam("query", "카페")
+                        .queryParam("category_group_code", "CE7")
+                        .queryParam("y", lat)
+                        .queryParam("x", lng)
+                        .queryParam("radius", 1000)  // 반경 1km
+                        .queryParam("sort", "distance")
+                        .build()
+                )
+                .retrieve()
+                .bodyToMono(KakaoLocalResponse.class)
+                .block() // 동기 호출 (필요하면 비동기로 변경 가능)
+                .getDocuments();
+    }
+
+    public String coordinateToAddressName(double lat, double lng) {
+
+        KakaoCoordinateResponse response = kakaoWebClient.get()
+                .uri(uriBuilder -> uriBuilder
+                        .path("/v2/local/geo/coord2address.json")
+                        .queryParam("x", lng)
+                        .queryParam("y", lat)
+                        .build()
+                )
+                .retrieve()
+                .bodyToMono(KakaoCoordinateResponse.class)
+                .block();
+
+        if (response == null || response.getDocuments() == null || response.getDocuments().isEmpty()) {
+            throw new BusinessException(LocationErrorCode.ADDRESS_NOT_FOUND);
+        }
+
+        KakaoCoordinateResponse.Document doc = response.getDocuments().get(0);
+
+        String addressName = null;
+        if (doc.getRoad_address() != null && doc.getRoad_address().getAddress_name() != null) {
+            addressName = doc.getRoad_address().getAddress_name();
+        } else if (doc.getAddress() != null) {
+            addressName = doc.getAddress().getAddress_name();
+        }
+
+        if (addressName == null || addressName.isBlank()) {
+            throw new BusinessException(LocationErrorCode.ADDRESS_NOT_FOUND);
+        }
+
+        return addressName;
+    }
+
 }
\ No newline at end of file
diff --git a/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/LocationService.java b/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/LocationService.java
index f4217e5b..262dcaa2 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/LocationService.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/domain/location/service/LocationService.java
@@ -1,13 +1,92 @@
 package com.back.web7_9_codecrete_be.domain.location.service;
 
+import com.back.web7_9_codecrete_be.domain.location.dto.KakaoLocalResponse;
+import com.back.web7_9_codecrete_be.domain.location.dto.request.LocationRequestDto;
+import com.back.web7_9_codecrete_be.domain.location.dto.response.LocationResponseDto;
+import com.back.web7_9_codecrete_be.domain.location.entity.Location;
 import com.back.web7_9_codecrete_be.domain.location.repository.LocationRepository;
+import com.back.web7_9_codecrete_be.domain.users.entity.User;
+import com.back.web7_9_codecrete_be.domain.users.repository.UserRepository;
+import com.back.web7_9_codecrete_be.global.error.code.AuthErrorCode;
+import com.back.web7_9_codecrete_be.global.error.code.LocationErrorCode;
+import com.back.web7_9_codecrete_be.global.error.exception.BusinessException;
 import lombok.RequiredArgsConstructor;
 import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
 
 @Service
 @RequiredArgsConstructor
 public class LocationService {
 
     private final LocationRepository locationRepository;
+    private final KakaoLocalService kakaoLocalService;
 
+
+    @Transactional(readOnly = true)
+    public LocationResponseDto getLocation(User user){                     //내 위치 불러오기
+
+        Location location =locationRepository.findByUser(user);
+        if(location == null){
+            throw new BusinessException(LocationErrorCode.LOCATION_NOT_FOUND);
+        }
+
+        return LocationResponseDto.from(location);
+    }
+
+    @Transactional
+    public LocationResponseDto saveLocation(LocationRequestDto locationRequestDto, User user){        //내 위치 저장
+                                                                                                                        //예외 처리할 것: 내 위치가 저장되어있는지 확인         //로그인 되어있는지 확인         //추가하면 좋을것? 이게 대한민국의 좌표인지
+        validateKoreaCoordinate(locationRequestDto.getLat(), locationRequestDto.getLon());
+
+        if (locationRepository.existsByUser(user)) {
+            throw new BusinessException(LocationErrorCode.LOCATION_ALREADY_EXISTS);
+        }
+        String addressName = kakaoLocalService.coordinateToAddressName(locationRequestDto.getLat(), locationRequestDto.getLon());
+        if (addressName == null || addressName.isBlank()) {
+            throw new BusinessException(LocationErrorCode.LOCATION_NOT_EXIST_IN_KAKAO);
+        }
+        Location location = Location.create(user, locationRequestDto.getLat(), locationRequestDto.getLon(), addressName);
+        locationRepository.save(location);
+        return LocationResponseDto.from(location);
+    }
+
+    @Transactional
+    public LocationResponseDto modifyLocation(LocationRequestDto locationRequestDto, User user){      //내 위치 수정
+
+        Location location = locationRepository.findByUser(user);
+        if(location == null)
+            throw new BusinessException(LocationErrorCode.LOCATION_NOT_FOUND);
+
+        String addressName = kakaoLocalService.coordinateToAddressName(locationRequestDto.getLat(), locationRequestDto.getLon());
+
+        if (addressName == null || addressName.isBlank()) {
+            throw new BusinessException(LocationErrorCode.LOCATION_NOT_EXIST_IN_KAKAO);
+        }
+
+        location.update(locationRequestDto.getLat(), locationRequestDto.getLon(), addressName);
+        location.preUpdate();
+        return LocationResponseDto.from(location);
+    }
+
+    @Transactional
+    public void removeLocation(User user){                    //내 위치 삭제
+        Location location = locationRepository.findByUser(user);
+        if(location == null){
+            throw new BusinessException(LocationErrorCode.LOCATION_NOT_HAVE);
+        }
+        locationRepository.delete(location);
+    }
+
+//    public User getUserEntity(Long userId){                 //userId를 이용해서 User 객체 가져오기
+//        return userRepository.findById(userId).orElseThrow(
+//                () -> new BusinessException(AuthErrorCode.UNAUTHORIZED_USER)
+//        );
+//    }
+
+
+    private void validateKoreaCoordinate(double lat, double lon) {
+        if (lat < 33.0 || lat > 39.5 || lon < 124.0 || lon > 132.0) {
+            throw new BusinessException(LocationErrorCode.INVALID_KOREA_COORDINATE);
+        }
+    }
 }
diff --git a/src/main/java/com/back/web7_9_codecrete_be/global/error/code/LocationErrorCode.java b/src/main/java/com/back/web7_9_codecrete_be/global/error/code/LocationErrorCode.java
new file mode 100644
index 00000000..c18a2bcd
--- /dev/null
+++ b/src/main/java/com/back/web7_9_codecrete_be/global/error/code/LocationErrorCode.java
@@ -0,0 +1,22 @@
+package com.back.web7_9_codecrete_be.global.error.code;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+
+@Getter
+@RequiredArgsConstructor
+public enum LocationErrorCode implements ErrorCode{
+
+    LOCATION_NOT_FOUND(HttpStatus.NOT_FOUND, "L-100", "위치(좌표)를 찾을 수 없습니다."),
+    ADDRESS_NOT_FOUND(HttpStatus.NOT_FOUND, "L-101" , "위치(주소)를 찾을 수 없습니다."),
+    LOCATION_ALREADY_EXISTS(HttpStatus.NOT_FOUND, "L-102", "이미 저장되어있는 위치입니다."),
+    INVALID_KOREA_COORDINATE(HttpStatus.NOT_FOUND, "L-103" , "한국 좌표가 아닙니다"),
+    LOCATION_NOT_EXIST_IN_KAKAO(HttpStatus.NOT_FOUND, "L-104", "해당 좌표는 카카오에 등록되어있지 않습니다."),
+    LOCATION_NOT_HAVE(HttpStatus.NOT_FOUND, "L-105", "저장되어있는 좌표가 없어서 삭제가 불가능합니다.");
+
+    private final HttpStatus status;
+    private final String code;
+    private final String message;
+
+}
diff --git a/src/main/java/com/back/web7_9_codecrete_be/global/security/SecurityConfig.java b/src/main/java/com/back/web7_9_codecrete_be/global/security/SecurityConfig.java
index be26824b..70ebb226 100644
--- a/src/main/java/com/back/web7_9_codecrete_be/global/security/SecurityConfig.java
+++ b/src/main/java/com/back/web7_9_codecrete_be/global/security/SecurityConfig.java
@@ -52,6 +52,7 @@ public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Excepti
                                 "/v3/api-docs/**",       // Swagger
                                 "/swagger-ui/**",         // Swagger UI
                                 "/h2-console/**",       // H2 Console
+                                "/api/v1/location/**",      //location 정보 조회 도메인(임시)
                                 "/api/v1/concerts/**",     // concert 정보 조회 도메인
                                 "/api/v1/artists/**"    // artist 정보 저장 도메인(임시)
                         ).permitAll()