diff --git a/astrbot/core/platform/sources/qqofficial/qqofficial_message_event.py b/astrbot/core/platform/sources/qqofficial/qqofficial_message_event.py
index a90ca7ebae..f5ab5ad883 100644
--- a/astrbot/core/platform/sources/qqofficial/qqofficial_message_event.py
+++ b/astrbot/core/platform/sources/qqofficial/qqofficial_message_event.py
@@ -25,6 +25,25 @@
 from astrbot.core.utils.tencent_record_helper import wav_to_tencent_silk
 
 
+def _patch_qq_botpy_formdata() -> None:
+    """Patch qq-botpy for aiohttp>=3.12 compatibility.
+
+    qq-botpy 1.2.1 defines botpy.http._FormData._gen_form_data() and expects
+    aiohttp.FormData to have a private flag named _is_processed, which is no
+    longer present in newer aiohttp versions.
+    """
+
+    try:
+        from botpy.http import _FormData  # type: ignore
+
+        if not hasattr(_FormData, "_is_processed"):
+            setattr(_FormData, "_is_processed", False)
+    except Exception:
+        logger.debug("[QQOfficial] Skip botpy FormData patch.")
+
+
+_patch_qq_botpy_formdata()
+
 class QQOfficialMessageEvent(AstrMessageEvent):
     MARKDOWN_NOT_ALLOWED_ERROR = "不允许发送原生 markdown"