diff --git a/frontend/src/views/dataset/common/DatasetCustomField.vue b/frontend/src/views/dataset/common/DatasetCustomField.vue
index 3ec843512f..1de987d639 100644
--- a/frontend/src/views/dataset/common/DatasetCustomField.vue
+++ b/frontend/src/views/dataset/common/DatasetCustomField.vue
@@ -57,7 +57,7 @@ export default {
   watch: {
     'table': function() {
       fieldList(this.table.id).then(response => {
-        this.fields = response.data
+        this.fields = JSON.parse(JSON.stringify(response.data)).filter(ele => ele.extField === 0)
 
         this.checkedFields = []
         this.checkedList.forEach(ele => {
@@ -78,7 +78,7 @@ export default {
     initField() {
       if (this.table.id) {
         fieldList(this.table.id).then(response => {
-          this.fields = response.data
+          this.fields = JSON.parse(JSON.stringify(response.data)).filter(ele => ele.extField === 0)
         })
       }
     },
diff --git a/frontend/src/views/dataset/data/UnionView.vue b/frontend/src/views/dataset/data/UnionView.vue
index 466556fcf3..fcc08d37e2 100644
--- a/frontend/src/views/dataset/data/UnionView.vue
+++ b/frontend/src/views/dataset/data/UnionView.vue
@@ -222,7 +222,7 @@ export default {
       //   if (response.data) {
       this.union.sourceTableId = this.table.id
       fieldList(this.table.id).then(response => {
-        this.sourceFieldOption = response.data
+        this.sourceFieldOption = JSON.parse(JSON.stringify(response.data)).filter(ele => ele.extField === 0)
       })
       this.editUnion = true
       //   } else {
@@ -320,7 +320,7 @@ export default {
       this.union.targetTableId = param.id
       this.union.targetTableFieldId = ''
       fieldList(param.id).then(response => {
-        this.targetFieldOption = response.data
+        this.targetFieldOption = JSON.parse(JSON.stringify(response.data)).filter(ele => ele.extField === 0)
       })
       this.$refs['targetTable'].doClose()
     }