diff --git a/dsAi/src/main/java/com/dsideal/Res/Test/MetadataTemplateGenerator.java b/dsAi/src/main/java/com/dsideal/Res/Test/MetadataTemplateGenerator.java
index 188e8cda..96ee7ec3 100644
--- a/dsAi/src/main/java/com/dsideal/Res/Test/MetadataTemplateGenerator.java
+++ b/dsAi/src/main/java/com/dsideal/Res/Test/MetadataTemplateGenerator.java
@@ -39,9 +39,9 @@ public class MetadataTemplateGenerator {
         Row headerRow = sheet.createRow(0);
         headerRow.setHeightInPoints(20);
         
-        // 先设置所有列宽为44（原22的两倍）
+        // 先设置所有列宽为18
         for (int i = 0; i < headers.length; i++) {
-            sheet.setColumnWidth(i, 44 * 256); // 44个字符宽度
+            sheet.setColumnWidth(i, 18 * 256); // 18个字符宽度
         }
         
         // 再创建单元格
@@ -61,17 +61,35 @@ public class MetadataTemplateGenerator {
             }
         }
         
-        // 设置数据验证（是否为空、是否主键）
+        // 设置数据验证
         DataValidationHelper validationHelper = sheet.getDataValidationHelper();
-        DataValidationConstraint constraint = validationHelper.createExplicitListConstraint(new String[]{"是", "否"});
-        CellRangeAddressList addressList = new CellRangeAddressList(1, 1000, 5, 6);
-        DataValidation validation = validationHelper.createValidation(constraint, addressList);
-        sheet.addValidationData(validation);
         
-        // 自动调整列宽
-        for (int i = 0; i < headers.length; i++) {
-            sheet.autoSizeColumn(i);
-        }
+        // 1. 数据类型下拉列表（第3列，索引2）
+        String[] dataTypes = {"INT", "BIGINT", "DECIMAL", "VARCHAR", "CHAR", "TEXT", "DATE", "DATETIME", "BOOLEAN", "FLOAT", "DOUBLE"};
+        DataValidationConstraint typeConstraint = validationHelper.createExplicitListConstraint(dataTypes);
+        CellRangeAddressList typeAddressList = new CellRangeAddressList(1, 1000, 3, 3); // 数据类型列
+        DataValidation typeValidation = validationHelper.createValidation(typeConstraint, typeAddressList);
+        sheet.addValidationData(typeValidation);
+        
+        // 2. 数据长度数字验证（第4列，索引3）
+        DataValidationConstraint lengthConstraint = validationHelper.createNumericConstraint(
+            DataValidationConstraint.ValidationType.INTEGER,
+            DataValidationConstraint.OperatorType.GREATER_OR_EQUAL,
+            "0",
+            null
+        );
+        CellRangeAddressList lengthAddressList = new CellRangeAddressList(1, 1000, 4, 4); // 长度列
+        DataValidation lengthValidation = validationHelper.createValidation(lengthConstraint, lengthAddressList);
+        lengthValidation.setShowErrorBox(true);
+        lengthValidation.createErrorBox("输入错误", "请输入有效的数字");
+        sheet.addValidationData(lengthValidation);
+        
+        // 原有的是否为空、是否主键验证
+        DataValidationConstraint yesNoConstraint = validationHelper.createExplicitListConstraint(new String[]{"是", "否"});
+        CellRangeAddressList yesNoAddressList = new CellRangeAddressList(1, 1000, 5, 6);
+        DataValidation yesNoValidation = validationHelper.createValidation(yesNoConstraint, yesNoAddressList);
+        sheet.addValidationData(yesNoValidation);
+        
         
         // 保存文件
         try (FileOutputStream outputStream = new FileOutputStream("c:/元数据采集模板.xlsx")) {