diff --git a/src/apis.js b/src/apis.js
index 63058f9..8513a15 100644
--- a/src/apis.js
+++ b/src/apis.js
@@ -50,12 +50,12 @@ export const getProvinceData = () => {
   return request("GET", "/index/provinces/list");
 };
 
-export const loginAPI = async (nickName, avatarUrl, code) => {
+export const loginAPI = async (nickName, avatarData, code) => {
   const result = await request("POST", "/index/code", {
     appName: "shoot",
     appId: "wxa8f5989dcd45cc23",
     nickName,
-    avatarUrl,
+    avatarData,
     code,
   });
   uni.setStorageSync("token", result.token);
diff --git a/src/components/Signin.vue b/src/components/Signin.vue
index e6c3811..af41c88 100644
--- a/src/components/Signin.vue
+++ b/src/components/Signin.vue
@@ -50,7 +50,10 @@ const handleLogin = () => {
     provider: "weixin",
     success: async (loginRes) => {
       const { code } = loginRes;
-      const result = await loginAPI(nickName.value, avatarUrl.value, code);
+      const fileManager = uni.getFileSystemManager();
+      const avatarBase64 = fileManager.readFileSync(avatarUrl.value, "base64");
+      const base64Url = `data:image/png;base64,${avatarBase64}`;
+      const result = await loginAPI(nickName.value, base64Url, code);
       updateUser({
         ...result.user,
         nickName: nickName.value,