diff --git a/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataSourceServiceImpl.java b/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataSourceServiceImpl.java
index 50ec25b..e646373 100644
--- a/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataSourceServiceImpl.java
+++ b/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataSourceServiceImpl.java
@@ -196,7 +196,7 @@ public class DataSourceServiceImpl extends ServiceImpl<DataSourceMapper, DataSou
                     String tableName = rs.getString("TABLE_NAME");
                     String tableRemark = rs.getString("REMARKS");
 
-                    PreparedStatement preparedStatement = conn.prepareStatement(SELECTALL + tableName);
+                    PreparedStatement preparedStatement = conn.prepareStatement(SELECTALL + tableName+" limit 1");
 
                     ResultSet resultSet = preparedStatement.executeQuery();