diff --git a/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataValueServiceImpl.java b/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataValueServiceImpl.java
index bbc1695..4c822c4 100644
--- a/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataValueServiceImpl.java
+++ b/muyu-source-server/src/main/java/com/muyu/source/service/Impl/DataValueServiceImpl.java
@@ -204,7 +204,7 @@ public class DataValueServiceImpl extends ServiceImpl<DataValueMapper, DataValue
         ExecutorService threadPool = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
 
         try {
-            PreparedStatement preparedStatement = conn.prepareStatement(SELECTALL + tableName);
+            PreparedStatement preparedStatement = conn.prepareStatement(SELECTALL + tableName+" limit 100");
             ResultSet resultSet = preparedStatement.executeQuery();
             ResultSetMetaData metaData = resultSet.getMetaData();
             int columnCount = metaData.getColumnCount();