diff --git a/pages/template/scroll-fold-nav/scroll-fold-nav.uvue b/pages/template/scroll-fold-nav/scroll-fold-nav.uvue
index c9fb6f83e96f68b6a517e9066bb8d370c1e26365..4ad647bd6f1fd89e6c1936bda988abf481621393 100644
--- a/pages/template/scroll-fold-nav/scroll-fold-nav.uvue
+++ b/pages/template/scroll-fold-nav/scroll-fold-nav.uvue
@@ -24,7 +24,7 @@
     },
     methods: {
       onScroll(e : ScrollEvent) {
-        (this.$refs['header'] as ComponentPublicInstance).$data['scrollTop'] = e.detail.scrollTop
+        (this.$refs['header'] as ComponentPublicInstance).$data['scrollTop'] = (e.detail.scrollTop<0?0:e.detail.scrollTop)
       },
       back() {
         // uni.navigateBack()  // 这么写用不了