diff --git a/src/components/AttachmentUpload.vue b/src/components/AttachmentUpload.vue
index ce4ea51..400e929 100644
--- a/src/components/AttachmentUpload.vue
+++ b/src/components/AttachmentUpload.vue
@@ -133,14 +133,13 @@ watch(() => props.showTable, (newVal) => {
 watch(() => props.otherFileList, (newVal) => {
   console.log('newotherFileList', newVal)
   if (props.preview) {
-    if (props.formData.fileList == null) {
+    if (props.formData.fileList.length===0) {
       allFileList.value = newVal
     } else {
       newVal?.forEach(item => {
         allFileList.value.push(item)
       })
     }
-
   } else {
     allFileList.value = newVal
   }