diff --git a/apps/web-antd/src/views/workflow/components/apply-modal.vue b/apps/web-antd/src/views/workflow/components/apply-modal.vue
index 5c4ce89d..315884b5 100644
--- a/apps/web-antd/src/views/workflow/components/apply-modal.vue
+++ b/apps/web-antd/src/views/workflow/components/apply-modal.vue
@@ -136,7 +136,7 @@ async function handleSubmit() {
       userName: item.nickName,
     }));
     const requestData = {
-      fileId: attachment.join(','),
+      fileId: attachment,
       messageType,
       flowCopyList: flowCCList,
       taskId,
diff --git a/apps/web-antd/src/views/workflow/components/approval-modal.vue b/apps/web-antd/src/views/workflow/components/approval-modal.vue
index 3caf9a85..3ac80b4f 100644
--- a/apps/web-antd/src/views/workflow/components/approval-modal.vue
+++ b/apps/web-antd/src/views/workflow/components/approval-modal.vue
@@ -160,7 +160,7 @@ async function handleSubmit() {
     }));
     const requestData = {
       ...omit(data, ['attachment']),
-      fileId: data.attachment.join(','),
+      fileId: data.attachment,
       taskVariables: {},
       variables: {},
       flowCopyList,
diff --git a/apps/web-antd/src/views/workflow/components/approval-rejection-modal.vue b/apps/web-antd/src/views/workflow/components/approval-rejection-modal.vue
index 82bd184d..14573bbc 100644
--- a/apps/web-antd/src/views/workflow/components/approval-rejection-modal.vue
+++ b/apps/web-antd/src/views/workflow/components/approval-rejection-modal.vue
@@ -124,7 +124,7 @@ async function handleSubmit() {
     }
     const data = cloneDeep(await formApi.getValues());
     // 附件join
-    data.fileId = data.attachment?.join?.(',');
+    data.fileId = data.attachment;
     // 取消attachment参数的传递
     data.attachment = undefined;
     await backProcess(data);