diff --git a/src/components/exportDia.vue b/src/components/exportDia.vue
index 5c15425..a170ebe 100644
--- a/src/components/exportDia.vue
+++ b/src/components/exportDia.vue
@@ -139,20 +139,22 @@ export default {
       this.multipleSelection = val;
     },
     exportData(length) {
-      let studentIds = [];
+      let studentIds = null;
       if (length) {
         studentIds = this.exportStudent.slice(0, 10).map((item) => {
           return item.studentId;
         });
       } else {
-        studentIds = this.multipleSelection.map((item) => {
-          return item.studentId;
-        });
+        if (this.exportType == 1) {
+          studentIds = [];
+        } else {
+          studentIds = this.multipleSelection.map((item) => {
+            return item.studentId;
+          });
+          studentIds.length == 0 ? (studentIds = null) : "";
+        }
       }
-      this.$emit(
-        "exportData",
-        this.downType == 1 ? null : studentIds.length == 0 ? null : studentIds
-      );
+      this.$emit("exportData", this.downType == 1 ? null : studentIds);
       this.cancelSelection();
     },
     cancel() {