diff --git a/README.md b/README.md
index 7b0f183..0a9db1a 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 [![npm downloads](https://img.shields.io/npm/dm/vxe-table-plugin-export-pdf.svg?style=flat-square)](http://npm-stat.com/charts.html?package=vxe-table-plugin-export-pdf)
 [![npm license](https://img.shields.io/github/license/mashape/apistatus.svg)](LICENSE)
 
-基于 [vxe-table](https://www.npmjs.com/package/vxe-table) 的表格插件，支持导出 pdf 格式
+基于 [vxe-table](https://www.npmjs.com/package/vxe-table) 的表格插件，支持导出 pdf 格式，依赖 [jspdf](https://github.com/MrRio/jsPDF) 库
 
 ## Installing
 
diff --git a/index.ts b/index.ts
index cf18a76..02ba56d 100644
--- a/index.ts
+++ b/index.ts
@@ -59,9 +59,9 @@ function getFooterData (opts: VxeTablePropTypes.ExportConfig, footerData: any[][
 function exportPDF (params: VxeGlobalInterceptorHandles.InterceptorExportParams) {
   const { fonts, beforeMethod } = globalOptions
   const { $table, options, columns, datas } = params
-  const { props, instance, computeMaps } = $table
+  const { props, instance } = $table
   const { treeConfig } = props
-  const { computeTreeOpts } = computeMaps
+  const { computeTreeOpts } = $table.getComputeMaps()
   const treeOpts = computeTreeOpts.value
   const { modal, t } = instance.appContext.config.globalProperties.$vxe as VXETableByVueProperty
   const dX = 7
diff --git a/package.json b/package.json
index 9511224..a210e18 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vxe-table-plugin-export-pdf",
-  "version": "3.0.0-alpha.0",
+  "version": "3.0.0-alpha.1",
   "description": "基于 vxe-table 的表格插件，支持导出 pdf 格式",
   "scripts": {
     "lib": "gulp build"
@@ -51,8 +51,8 @@
     "prettier": "^2.1.2",
     "typescript": "^4.0.5",
     "vue": "^3.0.2",
-    "vxe-table": "^4.0.0-beta.0",
-    "xe-utils": "^3.0.1"
+    "vxe-table": "^4.0.0-beta.6",
+    "xe-utils": "^3.0.4"
   },
   "peerDependencies": {
     "vxe-table": ">= 4"