diff --git a/src/main/java/com/sjhy/plugin/dto/TableInfoDTO.java b/src/main/java/com/sjhy/plugin/dto/TableInfoDTO.java
index a7a1636..418319f 100644
--- a/src/main/java/com/sjhy/plugin/dto/TableInfoDTO.java
+++ b/src/main/java/com/sjhy/plugin/dto/TableInfoDTO.java
@@ -70,7 +70,7 @@ public class TableInfoDTO {
     }
 
     private static void merge(TableInfoDTO oldData, TableInfoDTO newData) {
-        if (oldData == null || CollectionUtil.isEmpty(oldData.getFullColumn())) {
+        if (oldData == null) {
             return;
         }
         if (!StringUtils.isEmpty(oldData.getPreName())) {
@@ -88,6 +88,9 @@ public class TableInfoDTO {
         if (!StringUtils.isEmpty(oldData.getSaveModelName())) {
             newData.saveModelName = oldData.getSaveModelName();
         }
+        if (CollectionUtil.isEmpty(oldData.getFullColumn())) {
+            return;
+        }
         // 补充自定义列
         for (ColumnInfoDTO oldColumn : oldData.getFullColumn()) {
             if (!oldColumn.getCustom()) {
diff --git a/src/main/java/com/sjhy/plugin/dto/TableInfoSettingsDTO.java b/src/main/java/com/sjhy/plugin/dto/TableInfoSettingsDTO.java
index d8549f0..525d6a6 100644
--- a/src/main/java/com/sjhy/plugin/dto/TableInfoSettingsDTO.java
+++ b/src/main/java/com/sjhy/plugin/dto/TableInfoSettingsDTO.java
@@ -87,6 +87,7 @@ public class TableInfoSettingsDTO {
     public TableInfo readTableInfo(DbTable dbTable) {
         String key = generateKey(dbTable);
         TableInfoDTO dto = this.tableInfoMap.get(key);
+        // 表可能新增了字段，需要重新合并保存
         dto = new TableInfoDTO(dto, dbTable);
         this.tableInfoMap.put(key, dto);
         return dto.toTableInfo(dbTable);