diff --git a/src/components/exam/ExamAddonPanel.tsx b/src/components/exam/ExamAddonPanel.tsx
index e00e4da..2ad487c 100644
--- a/src/components/exam/ExamAddonPanel.tsx
+++ b/src/components/exam/ExamAddonPanel.tsx
@@ -1,7 +1,7 @@
 import { useEffect, useMemo, useState, useRef } from 'react';
 
 import type { ExamClient } from '../../data/mockData';
-import { searchPhysicalExamAddItem, getAddItemCustomerInfo, getChannelCompanyList, createNativePaymentQrcode, checkNativePaymentStatus, submitAddItemBillSign } from '../../api';
+import { searchPhysicalExamAddItem, getAddItemCustomerInfo, getChannelCompanyList, createNativePaymentQrcode, checkNativePaymentStatus, getAddItemBillPdf } from '../../api';
 import { Button, Input } from '../ui';
 import { cls } from '../../utils/cls';
 import nozImage from '../../assets/image/noz.png';
@@ -358,43 +358,16 @@ export const ExamAddonPanel = ({ client }: ExamAddonPanelProps) => {
     };
   }, []);
 
-  // 创建空白签名图片（用于自动生成PDF）
-  const createBlankSignature = (): Promise<Blob> => {
-    return new Promise((resolve) => {
-      const canvas = document.createElement('canvas');
-      canvas.width = 400;
-      canvas.height = 200;
-      const ctx = canvas.getContext('2d');
-      if (ctx) {
-        // 创建白色背景
-        ctx.fillStyle = '#FFFFFF';
-        ctx.fillRect(0, 0, canvas.width, canvas.height);
-      }
-      canvas.toBlob((blob) => {
-        if (blob) {
-          resolve(blob);
-        } else {
-          // 如果转换失败，创建一个空的 Blob
-          resolve(new Blob([], { type: 'image/png' }));
-        }
-      }, 'image/png');
-    });
-  };
-
   // 获取加项PDF
   const fetchAddItemBillPdf = async (examId: number) => {
     try {
-      // 创建空白签名
-      const blankSignature = await createBlankSignature();
-
       // 调用接口获取加项PDF
-      const res = await submitAddItemBillSign({
+      const res = await getAddItemBillPdf({
         exam_id: examId,
-        sign_file: blankSignature,
       });
 
       if (res.Status === 200 && res.Data?.pdf_url) {
-        // 保存加项PDF信息
+        // 保存加项PDF信息到localStorage
         setAddItemBillPdf(examId, {
           pdf_name: res.Data.pdf_name || '加项单',
           pdf_url: res.Data.pdf_url,