diff --git a/src/views/MessagePage/modules/UnderStudyFilesModal.vue b/src/views/MessagePage/modules/UnderStudyFilesModal.vue
index f4540d0..e5732f3 100644
--- a/src/views/MessagePage/modules/UnderStudyFilesModal.vue
+++ b/src/views/MessagePage/modules/UnderStudyFilesModal.vue
@@ -98,7 +98,7 @@ export default {
     handlePreview(record) {
       if (this.isCommittee) {
         if (record && record.FILE_ID) {
-          const fileFullUrl = `${window._CONFIG['domianWebSocketURL']}/payResearchProject/payResearchProject/downLoad/?fileId=${record.FILE_ID}&token=${Vue.ls.get(ACCESS_TOKEN)}&fileName=${record.FILE_NAME}`
+          const fileFullUrl = `${window._CONFIG['domianWebSocketURL']}/payResearchProject/payResearchProject/download/?fileId=${record.FILE_ID}&token=${Vue.ls.get(ACCESS_TOKEN)}&fullfilename=${record.FILE_NAME}`
           let url = `${ window._CONFIG['onlinePreviewDomainURL'] }?url=${ encodeURIComponent(fileFullUrl) }`
           window.open(url)
         }