diff --git a/backend/python/app/api/admin/skills_admin.py b/backend/python/app/api/admin/skills_admin.py
index af3e522..4a06361 100644
--- a/backend/python/app/api/admin/skills_admin.py
+++ b/backend/python/app/api/admin/skills_admin.py
@@ -534,45 +534,82 @@ async def delete_skill(
     admin_user=Depends(get_current_admin),
     db: Session = Depends(get_db),
 ):
-    """删除技能"""
+    """删除技能（支持 EvolutionSkill 和 MarketApp 两种来源）"""
+    # 1) 先尝试 EvolutionSkill
     skill = db.query(EvolutionSkill).filter(EvolutionSkill.id == skill_id).first()
-    if not skill:
-        raise HTTPException(status_code=404, detail="技能不存在")
+    if skill:
+        skill_name = skill.skill_name
+        user_id = skill.user_id
 
-    skill_name = skill.skill_name
-    user_id = skill.user_id
+        # 记录事件
+        ev = EvolutionEvent(
+            id=str(uuid.uuid4()),
+            user_id=user_id,
+            skill_name=skill_name,
+            event_type="deleted",
+            description=f"管理员 {admin_user.username} 删除技能 {skill_name}",
+        )
+        db.add(ev)
 
-    # 记录事件
-    ev = EvolutionEvent(
-        id=str(uuid.uuid4()),
-        user_id=user_id,
-        skill_name=skill_name,
-        event_type="deleted",
-        description=f"管理员 {admin_user.username} 删除技能 {skill_name}",
-    )
-    db.add(ev)
+        # 删除版本历史
+        db.query(SkillVersion).filter(SkillVersion.skill_name == skill_name).delete()
 
-    # 删除版本历史
-    db.query(SkillVersion).filter(SkillVersion.skill_name == skill_name).delete()
+        # 删除发布记录
+        db.query(SkillPublishRecord).filter(SkillPublishRecord.skill_id == skill_id).delete()
 
-    # 删除发布记录
-    db.query(SkillPublishRecord).filter(SkillPublishRecord.skill_id == skill_id).delete()
+        # 删除团队共享记录
+        db.query(TeamSharedSkill).filter(TeamSharedSkill.skill_id == skill_id).delete()
 
-    # 删除团队共享记录
-    db.query(TeamSharedSkill).filter(TeamSharedSkill.skill_id == skill_id).delete()
+        # 同步清理市场应用表中的同名技能
+        market_app = db.query(MarketApp).filter(
+            MarketApp.type == "skill",
+            MarketApp.name == skill_name,
+        ).first()
+        if market_app:
+            db.query(AppInstallation).filter(AppInstallation.app_id == market_app.id).delete()
+            db.query(AppPurchase).filter(AppPurchase.app_id == market_app.id).delete()
+            db.query(AppReview).filter(AppReview.app_id == market_app.id).delete()
+            db.delete(market_app)
 
-    db.delete(skill)
-    db.commit()
+        db.delete(skill)
+        db.commit()
 
-    LogService.log_operation(
-        user_id=admin_user.id,
-        username=admin_user.username,
-        action="delete_skill",
-        target="evolution_skills",
-        detail=f"删除技能 {skill_name}",
-    )
+        LogService.log_operation(
+            user_id=admin_user.id,
+            username=admin_user.username,
+            action="delete_skill",
+            target="evolution_skills",
+            detail=f"删除技能 {skill_name}",
+        )
 
-    return {"code": 0, "message": f"技能 {skill_name} 已删除"}
+        return {"code": 0, "message": f"技能 {skill_name} 已删除"}
+
+    # 2) 再尝试 MarketApp 中导入的技能（type=skill）
+    market_app = db.query(MarketApp).filter(
+        MarketApp.type == "skill",
+        MarketApp.id == skill_id,
+    ).first()
+    if market_app:
+        skill_name = market_app.name
+        # 清理关联记录
+        db.query(AppInstallation).filter(AppInstallation.app_id == market_app.id).delete()
+        db.query(AppPurchase).filter(AppPurchase.app_id == market_app.id).delete()
+        db.query(AppReview).filter(AppReview.app_id == market_app.id).delete()
+        db.delete(market_app)
+        db.commit()
+
+        LogService.log_operation(
+            user_id=admin_user.id,
+            username=admin_user.username,
+            action="delete_skill",
+            target="market_apps",
+            detail=f"删除市场技能 {skill_name}",
+        )
+
+        return {"code": 0, "message": f"技能 {skill_name} 已删除"}
+
+    # 3) 都未找到
+    raise HTTPException(status_code=404, detail="技能不存在")
 
 
 # ============================================================