diff --git a/src/i18n/locales/en-US.ts b/src/i18n/locales/en-US.ts
index 6759ef19..f483b86a 100644
--- a/src/i18n/locales/en-US.ts
+++ b/src/i18n/locales/en-US.ts
@@ -1680,6 +1680,7 @@ export default {
     },
     tool: {
       help: {
+        fileName: "5G Core Network Network Management Operations Manual.pdf",
         download: "Download",
         pdfViewer: "In-browser preview",
         pdfViewerErr: "Sorry, your browser does not support PDF preview!",
diff --git a/src/i18n/locales/zh-CN.ts b/src/i18n/locales/zh-CN.ts
index 7d832154..4ff4c3e0 100644
--- a/src/i18n/locales/zh-CN.ts
+++ b/src/i18n/locales/zh-CN.ts
@@ -1680,6 +1680,7 @@ export default {
     },
     tool: {
       help: {
+        fileName: "5G核心网网管操作手册.pdf",
         download: "下载",
         pdfViewer: "浏览器内预览",
         pdfViewerErr: "很抱歉，您的浏览器不支持 PDF 预览！",
diff --git a/src/views/tool/help/index.vue b/src/views/tool/help/index.vue
index ae24c2f7..70dfe05f 100644
--- a/src/views/tool/help/index.vue
+++ b/src/views/tool/help/index.vue
@@ -70,9 +70,7 @@ function fnDownload() {
   fetch(url)
     .then(response => response.blob())
     .then(blob => {
-      let fileName = url.substring(url.lastIndexOf('/') + 1);
-      fileName = fileName.split('?')[0];
-      saveAs(blob, fileName);
+      saveAs(blob, t('views.tool.help.fileName'));
     })
     .catch(error => {
       console.error('Error:', error);