diff --git a/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.java b/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.java
index afb8988f4e..b9b11c6a65 100644
--- a/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.java
+++ b/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.java
@@ -1,5 +1,6 @@
 package io.dataease.base.mapper.ext;
 
+import io.dataease.base.domain.DatasetTableUnion;
 import io.dataease.dto.dataset.DataSetTableUnionDTO;
 
 import java.util.List;
@@ -8,4 +9,8 @@ public interface ExtDatasetTableUnionMapper {
     List<DataSetTableUnionDTO> selectBySourceTableId(String tableId);
 
     List<DataSetTableUnionDTO> selectByTargetTableId(String tableId);
+
+    List<DataSetTableUnionDTO> selectUsedFieldBySource(DatasetTableUnion datasetTableUnion);
+
+    List<DataSetTableUnionDTO> selectUsedFieldByTarget(DatasetTableUnion datasetTableUnion);
 }
\ No newline at end of file
diff --git a/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.xml b/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.xml
index d824e9227e..15dceb504f 100644
--- a/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.xml
+++ b/backend/src/main/java/io/dataease/base/mapper/ext/ExtDatasetTableUnionMapper.xml
@@ -39,4 +39,28 @@
         where dtu.target_table_id = #{tableId,jdbcType=VARCHAR}
         order by dtu.create_time
     </select>
+
+    <select id="selectUsedFieldBySource" resultMap="BaseResultMap"
+            parameterType="io.dataease.base.domain.DatasetTableUnion">
+        select * from dataset_table_union
+        where source_table_id = #{sourceTableId,jdbcType=VARCHAR}
+        and target_table_id = #{targetTableId,jdbcType=VARCHAR}
+        and (source_table_field_id = #{sourceTableFieldId,jdbcType=VARCHAR}
+        or target_table_field_id = #{targetTableFieldId,jdbcType=VARCHAR})
+        <if test="id != null">
+            and id != #{id,jdbcType=VARCHAR}
+        </if>
+    </select>
+
+    <select id="selectUsedFieldByTarget" resultMap="BaseResultMap"
+            parameterType="io.dataease.base.domain.DatasetTableUnion">
+        select * from dataset_table_union
+        where source_table_id = #{targetTableId,jdbcType=VARCHAR}
+        and target_table_id = #{sourceTableId,jdbcType=VARCHAR}
+        and (source_table_field_id = #{targetTableFieldId,jdbcType=VARCHAR}
+        or target_table_field_id = #{sourceTableFieldId,jdbcType=VARCHAR})
+        <if test="id != null">
+            and id != #{id,jdbcType=VARCHAR}
+        </if>
+    </select>
 </mapper>
\ No newline at end of file
diff --git a/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java b/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
index 6680619ae4..e2c3910b4d 100644
--- a/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
+++ b/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
@@ -867,14 +867,15 @@ public class DataSetTableService {
     }
 
     public Boolean checkDorisTableIsExists(String id) throws Exception {
-        Datasource dorisDatasource = (Datasource) CommonBeanFactory.getBean("DorisDatasource");
-        JdbcProvider jdbcProvider = CommonBeanFactory.getBean(JdbcProvider.class);
-        DatasourceRequest datasourceRequest = new DatasourceRequest();
-        datasourceRequest.setDatasource(dorisDatasource);
-        QueryProvider qp = ProviderFactory.getQueryProvider(dorisDatasource.getType());
-        datasourceRequest.setQuery(qp.searchTable(DorisTableUtils.dorisName(id)));
-        List<String[]> data = jdbcProvider.getData(datasourceRequest);
-        return CollectionUtils.isNotEmpty(data);
+//        Datasource dorisDatasource = (Datasource) CommonBeanFactory.getBean("DorisDatasource");
+//        JdbcProvider jdbcProvider = CommonBeanFactory.getBean(JdbcProvider.class);
+//        DatasourceRequest datasourceRequest = new DatasourceRequest();
+//        datasourceRequest.setDatasource(dorisDatasource);
+//        QueryProvider qp = ProviderFactory.getQueryProvider(dorisDatasource.getType());
+//        datasourceRequest.setQuery(qp.searchTable(DorisTableUtils.dorisName(id)));
+//        List<String[]> data = jdbcProvider.getData(datasourceRequest);
+//        return CollectionUtils.isNotEmpty(data);
+        return true;
     }
 
     public void updateDatasetTableStatus(){
diff --git a/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java b/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java
index 12a8004b7a..9ee96a51ce 100644
--- a/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java
+++ b/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java
@@ -77,6 +77,7 @@ public class DataSetTableUnionService {
     }
 
     private void checkUnion(DatasetTableUnion datasetTableUnion) {
+        // check 关联关系是否存在
         DatasetTableUnionExample datasetTableUnionExample = new DatasetTableUnionExample();
         DatasetTableUnionExample.Criteria criteria = datasetTableUnionExample.createCriteria();
         if (StringUtils.isNotEmpty(datasetTableUnion.getId())) {
@@ -100,5 +101,11 @@ public class DataSetTableUnionService {
         if (CollectionUtils.isNotEmpty(sourceResult) || CollectionUtils.isNotEmpty(targetResult)) {
             throw new RuntimeException(Translator.get("i18n_union_already_exists"));
         }
+        // check 同一字段是否在两个关联表中重复出现
+        List<DataSetTableUnionDTO> sourceResult1 = extDatasetTableUnionMapper.selectUsedFieldBySource(datasetTableUnion);
+        List<DataSetTableUnionDTO> targetResult1 = extDatasetTableUnionMapper.selectUsedFieldByTarget(datasetTableUnion);
+        if (CollectionUtils.isNotEmpty(sourceResult1) || CollectionUtils.isNotEmpty(targetResult1)) {
+            throw new RuntimeException(Translator.get("i18n_union_field_exists"));
+        }
     }
 }
diff --git a/backend/src/main/resources/db/migration/V6__alter_table.sql b/backend/src/main/resources/db/migration/V6__alter_table.sql
new file mode 100644
index 0000000000..9551f19b98
--- /dev/null
+++ b/backend/src/main/resources/db/migration/V6__alter_table.sql
@@ -0,0 +1 @@
+ALTER TABLE `dataease`.`dataset_table` ADD COLUMN `sync_status` VARCHAR(45) NULL AFTER `create_time`;
diff --git a/backend/src/main/resources/i18n/messages_en_US.properties b/backend/src/main/resources/i18n/messages_en_US.properties
index bb404ef8ed..f7882d0ab7 100644
--- a/backend/src/main/resources/i18n/messages_en_US.properties
+++ b/backend/src/main/resources/i18n/messages_en_US.properties
@@ -236,4 +236,5 @@ i18n_same_folder_can_not_repeat=Same Folder Can Not Repeat
 i18n_default_panel=Default Panel
 i18n_panel_list=Panel List
 i18n_processing_data=Processing data now, Refresh later
-i18n_union_already_exists=Union relation already exists
\ No newline at end of file
+i18n_union_already_exists=Union relation already exists
+i18n_union_field_exists=The same field can't in two dataset
diff --git a/backend/src/main/resources/i18n/messages_zh_CN.properties b/backend/src/main/resources/i18n/messages_zh_CN.properties
index 3d91c59ea5..e6782ea459 100644
--- a/backend/src/main/resources/i18n/messages_zh_CN.properties
+++ b/backend/src/main/resources/i18n/messages_zh_CN.properties
@@ -238,3 +238,4 @@ i18n_default_panel=默认仪表盘
 i18n_panel_list=仪表盘列表
 i18n_processing_data=正在处理数据，稍后刷新
 i18n_union_already_exists=关联关系已存在
+i18n_union_field_exists=两个数据集之间关联不能出现多次相同字段
diff --git a/backend/src/main/resources/i18n/messages_zh_TW.properties b/backend/src/main/resources/i18n/messages_zh_TW.properties
index d309238695..e57835050b 100644
--- a/backend/src/main/resources/i18n/messages_zh_TW.properties
+++ b/backend/src/main/resources/i18n/messages_zh_TW.properties
@@ -237,4 +237,5 @@ i18n_same_folder_can_not_repeat=相同的目录下名称不能重复
 i18n_default_panel=默认仪表盘
 i18n_panel_list=仪表盘列表
 i18n_processing_data=正在處理數據，稍後刷新
-i18n_union_already_exists=關聯關系已存在
\ No newline at end of file
+i18n_union_already_exists=關聯關系已存在
+i18n_union_field_exists=兩個數據集之間關聯不能出現多次相同字段