diff --git a/src/components/JExpandTable.vue b/src/components/JExpandTable.vue
index b920fae6..f3308eeb 100644
--- a/src/components/JExpandTable.vue
+++ b/src/components/JExpandTable.vue
@@ -283,7 +283,7 @@ export default {
               } else {
                 arr[i] = true
               }
-            } else if (this.dataSource[i][this.lineCanExpandField] !== this.lineCanExpandValue) {
+            } else if (this.lineCanExpandField && this.dataSource[i][this.lineCanExpandField] !== this.lineCanExpandValue) {
               // 如果这行数据本身不需要填写
               arr[i] = true
             } else {