diff --git a/src/project/saas/AppCooperationPropaganda/detail.vue b/src/project/saas/AppCooperationPropaganda/detail.vue
index 09e70f6a..89de9760 100644
--- a/src/project/saas/AppCooperationPropaganda/detail.vue
+++ b/src/project/saas/AppCooperationPropaganda/detail.vue
@@ -138,7 +138,7 @@ export default {
     },
     ...mapActions(['previewFile']),
     prevFile(file) {
-      this.$Loading()
+      this.$loading()
       this.previewFile({ ...file }).then(()=>{
         // uni.hideLoading()
         this.$hideLoading()