diff --git a/xiaoqu-agent-service/src/main/java/me/iiv/agent/entity/m0/DistrictDistrictStrategy.java b/xiaoqu-agent-service/src/main/java/me/iiv/agent/entity/m0/DistrictDistrictStrategy.java
index 1b009c5..02f92fd 100644
--- a/xiaoqu-agent-service/src/main/java/me/iiv/agent/entity/m0/DistrictDistrictStrategy.java
+++ b/xiaoqu-agent-service/src/main/java/me/iiv/agent/entity/m0/DistrictDistrictStrategy.java
@@ -1,6 +1,7 @@
 package me.iiv.agent.entity.m0;
 
 import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableId;
 import com.baomidou.mybatisplus.annotation.TableName;
 import lombok.Getter;
@@ -35,6 +36,7 @@ public class DistrictDistrictStrategy implements Serializable {
     private String memo;
     private String contact;
     private String mail;
+    @TableField("buildCount")
     private Integer buildCount;
     private String districtNumber;
     private String phone;
diff --git a/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/tool/DistrictToolsTest.java b/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/tool/DistrictToolsTest.java
index 8de1d85..8a457dd 100644
--- a/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/tool/DistrictToolsTest.java
+++ b/xiaoqu-agent-service/src/test/java/me/iiv/agent/mcp/tool/DistrictToolsTest.java
@@ -176,6 +176,13 @@ class DistrictToolsTest {
                 .path("required").toString().contains("\"id\""));
     }
 
+    @Test
+    void districtEntityKeepsLegacyBuildCountColumnName() {
+        assertEquals("buildCount", TableInfoHelper.getTableInfo(DistrictDistrictStrategy.class).getFieldList().stream()
+                .filter(field -> "buildCount".equals(field.getProperty()))
+                .findFirst().orElseThrow().getColumn());
+    }
+
     @Test
     void listRejectsUnknownDistrictStateBeforeQuerying() {
         assertThrows(IllegalArgumentException.class, () -> tools.districtListQuery(