diff --git a/app/models/merchant.py b/app/models/merchant.py
index 653df15..698e6ab 100644
--- a/app/models/merchant.py
+++ b/app/models/merchant.py
@@ -21,6 +21,7 @@ class MerchantDB(Base):
 
     id = Column(Integer, primary_key=True, autoincrement=True)
     user_id = Column(Integer, ForeignKey("users.userid"), nullable=False)  # 归属用户
+    community_id = Column(Integer, ForeignKey("communities.id"), nullable=False)  # 所属小区
     name = Column(String(100), nullable=False)
     business_hours = Column(String(100), nullable=False)  # 营业时间，如 "09:00-22:00"
     address = Column(String(200), nullable=False)
@@ -41,6 +42,7 @@ class MerchantDB(Base):
 
 class MerchantCreate(BaseModel):
     user_id: int
+    community_id: int  # 所属小区ID
     name: str = Field(..., max_length=100)
     business_hours: str = Field(..., max_length=100)
     address: str = Field(..., max_length=200)
@@ -55,6 +57,7 @@ class MerchantCreate(BaseModel):
     
 class MerchantApply(BaseModel):
     name: str = Field(..., max_length=100)
+    community_id: int = Field(..., ge=0)  # 所属小区ID
     business_hours: str = Field(..., max_length=100)
     address: str = Field(..., max_length=200)
     longitude: float = Field(..., ge=-180, le=180, description="经度")
@@ -70,6 +73,7 @@ class MerchantApply(BaseModel):
 
 class MerchantUpdate(BaseModel):
     user_id: Optional[int] = None
+    community_id: Optional[int] = None  # 所属小区ID
     name: Optional[str] = Field(None, max_length=100)
     business_hours: Optional[str] = Field(None, max_length=100)
     address: Optional[str] = Field(None, max_length=200)
@@ -85,6 +89,8 @@ class MerchantUpdate(BaseModel):
 class MerchantInfo(BaseModel):
     id: int
     user_id: int
+    community_id: int  # 所属小区ID
+    community_name: Optional[str] = None  # 用于关联查询显示小区名称
     user_phone: Optional[str] = None
     user_nickname: Optional[str] = None
     online_pay_count: Optional[int] = 0
diff --git a/app/sql/v1.1.sql b/app/sql/v1.1.sql
index f5b736e..e7c4eda 100644
--- a/app/sql/v1.1.sql
+++ b/app/sql/v1.1.sql
@@ -154,4 +154,9 @@ ALTER TABLE merchant_orders
 ADD COLUMN product_delivery_deadline_time DATETIME COMMENT '配送截止时间快照' AFTER product_delivery_date;
 
 
---====FINISH 3.23====
\ No newline at end of file
+--====FINISH 3.23====
+
+ALTER TABLE merchants 
+ADD COLUMN community_id INT COMMENT '所属小区' AFTER user_id,
+ADD CONSTRAINT fk_merchant_community 
+FOREIGN KEY (community_id) REFERENCES communities(id)
\ No newline at end of file
diff --git a/jobs.sqlite b/jobs.sqlite
index f30f845..808b71e 100644
Binary files a/jobs.sqlite and b/jobs.sqlite differ