diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3e41a1d..c0e0999f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+# 5.7.5
+* 更新：鸿蒙端支持分享文件
+* 更新：鸿蒙端支持打开客服会话
+* 修复: 鸿蒙端分享小程序类型错误的问题
+* 完善鸿蒙端调试文档
+
 # 5.7.4
 * 鸿蒙SDK升级至1.0.15
 * Fix #735
@@ -5,7 +11,7 @@
 # 5.7.3
 * Kotlin 升级至2.1.0
 
-* # 5.7.2
+# 5.7.2
 * Fix #723
 
 # 5.7.1
diff --git a/README.md b/README.md
index a05508b5..eb318ae2 100644
--- a/README.md
+++ b/README.md
@@ -103,6 +103,8 @@ pod install
 }
 ```
 
+> HarmonyOS Debugging Notice: Do not use the IDE's automatic signing. You must manually apply for a debug certificate for signing and debugging.
+
 ## Register WxAPI
 
 Register your app via `fluwx` if necessary.
diff --git a/README_CN.md b/README_CN.md
index 61a49e12..211a9a78 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -98,6 +98,8 @@ pod install
 }
 ```
 
+> HarmonyOS 调试须知：不要使用 IDE 的自动签名，务必手动申请调试证书进行签名并调试
+
 ## 注册 WxAPI
 
 通过 `fluwx` 注册WxApi.
diff --git a/ohos/src/main/ets/components/plugin/FluwxPlugin.ets b/ohos/src/main/ets/components/plugin/FluwxPlugin.ets
index 6dafaa30..a7996ad7 100644
--- a/ohos/src/main/ets/components/plugin/FluwxPlugin.ets
+++ b/ohos/src/main/ets/components/plugin/FluwxPlugin.ets
@@ -115,12 +115,10 @@ export default class FluwxPlugin implements FlutterPlugin, MethodCallHandler, Ab
         this.extMsg = null;
         break;
       case "openWeChatCustomerServiceChat":
-        // TODO
-        result.notImplemented();
+        this.openWeChatCustomerServiceChat(call, result);
         break;
       case "checkSupportOpenBusinessView":
-        // TODO
-        result.notImplemented();
+        WXAPiHandler.checkSupportOpenBusinessView(result);
         break;
       case "openBusinessView":
         this.openBusinessView(call, result);
@@ -288,4 +286,14 @@ export default class FluwxPlugin implements FlutterPlugin, MethodCallHandler, Ab
 
     result.success(done);
   }
+
+  async openWeChatCustomerServiceChat(call: MethodCall, result: MethodResult) {
+    const request = new wechatSDK.OpenCustomerServiceChatReq();
+    request.corpId = call.argument("corpId") ?? "";
+    request.url = call.argument("url") ?? "";
+
+    const done = await WXAPiHandler.wxApi?.sendReq(this.uiContext, request);
+
+    result.success(done);
+  }
 }
diff --git a/ohos/src/main/ets/components/plugin/handlers/FluwxShareHandler.ets b/ohos/src/main/ets/components/plugin/handlers/FluwxShareHandler.ets
index c7447a16..515b735f 100644
--- a/ohos/src/main/ets/components/plugin/handlers/FluwxShareHandler.ets
+++ b/ohos/src/main/ets/components/plugin/handlers/FluwxShareHandler.ets
@@ -1,6 +1,6 @@
 import { Any, MethodCall, MethodResult } from "@ohos/flutter_ohos"
 import { buffer } from "@kit.ArkTS"
-import { fileUri } from "@kit.CoreFileKit"
+import { fileUri, fileIo as fs } from "@kit.CoreFileKit"
 import * as wxopensdk from '@tencent/wechat_open_sdk';
 import { WXAPiHandler } from "./WXAPiHandler"
 
@@ -32,8 +32,7 @@ export class FluwxShareHandler {
         this.shareWebPage(call, result);
         break;
       case "shareFile":
-        // TODO
-        result.notImplemented();
+        this.shareFile(call, result);
         break;
       default:
         result.notImplemented();
@@ -108,6 +107,54 @@ export class FluwxShareHandler {
     result.success(done)
   }
 
+  async shareFile(call: MethodCall, result: MethodResult) {
+    const source: Map<string, Any> = call.argument("source") ?? new Map();
+    const schemaIndex: number = source.get("schema")
+    let filePath: string = ""
+
+    // check schema is file or binary
+    if (schemaIndex < 2) {
+      result.error("ARG", "currently only file or binary schema is supported on ohos", null);
+      return;
+    }
+
+    // case schema is file
+    if(schemaIndex == 2) {
+      filePath = source.get("source")
+      if (filePath.startsWith("file://")) {
+        filePath = filePath;
+      } else {
+        filePath = fileUri.getUriFromPath(filePath);
+      }
+    } else {
+      // case schema is binary, write to temp file first
+      const bytes: Uint8Array = source.get("source");
+      const suffix: string = source.get("suffix") ?? ".tmp";
+      const fileName = `share_temp_${new Date().getTime()}${suffix}`;
+      const tempFilePath = `${WXAPiHandler.uiContext?.tempDir}/${fileName}`;
+      const tempFile = fs.openSync(tempFilePath, fs.OpenMode.READ_WRITE || fs.OpenMode.CREATE);
+      await fs.write(tempFile.fd, bytes.buffer);
+      await fs.close(tempFile.fd);
+      filePath = fileUri.getUriFromPath(tempFilePath);
+    }
+
+    const fileObject = new wxopensdk.WXFileObject()
+    fileObject.fileUri = filePath
+
+    const mediaMessage = new wxopensdk.WXMediaMessage()
+    mediaMessage.mediaObject = fileObject
+    mediaMessage.title = call.argument("title") || ""
+    mediaMessage.description = call.argument("description") || ""
+
+    const req = new wxopensdk.SendMessageToWXReq()
+    this.setCommonArgs(call, req, mediaMessage)
+    req.message = mediaMessage
+
+    const done = await WXAPiHandler.wxApi?.sendReq(WXAPiHandler.uiContext, req);
+
+    result.success(done)
+  }
+
   async shareMiniProgram(call: MethodCall, result: MethodResult) {
     const miniProgramObject = new wxopensdk.WXMiniProgramObject()
     miniProgramObject.userName = call.argument("userName")
@@ -118,7 +165,7 @@ export class FluwxShareHandler {
     let miniProgramTypeInt: number = call.argument("miniProgramType")
     if (miniProgramTypeInt === 1) {
       miniProgramType = wxopensdk.WXMiniProgramType.TEST
-    } else if (miniProgramType === 2) {
+    } else if (miniProgramTypeInt === 2) {
       miniProgramType = wxopensdk.WXMiniProgramType.PREVIEW
     }
 
diff --git a/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets b/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets
index 5cb8f5fd..ce351205 100644
--- a/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets
+++ b/ohos/src/main/ets/components/plugin/handlers/WXAPiHandler.ets
@@ -37,10 +37,26 @@ export class WXAPiHandler {
   }
 
   static checkWeChatInstallation(result: MethodResult) {
-    const isInstalled = bundleManager.canOpenLink("weixin://")
-    result.success(isInstalled)
+    const isInstalled = bundleManager.canOpenLink("weixin://") || WXAPiHandler.wxApi?.isWXAppInstalled() === true;
+    result.success(isInstalled);
   }
 
+  static checkSupportOpenBusinessView(result: MethodResult) {
+    if (!WXAPiHandler.wxApi) {
+      result.error("Unassigned WxApi", "please config wxapi first", null);
+      return;
+    }
+
+    const isInstalled = bundleManager.canOpenLink("weixin://") || WXAPiHandler.wxApi?.isWXAppInstalled() === true;
+    if (!isInstalled) {
+      result.error("WeChat Not Installed", "Please install the WeChat first", null);
+      return;
+    }
+
+    result.success(true);
+  }
+
+
   private static registerWxAPIInternal(appId: string) {
     let api = wechatOpenSDK.WXAPIFactory.createWXAPI(appId)
     WXAPiHandler.registered = true
diff --git a/pubspec.yaml b/pubspec.yaml
index a8c469ea..125453ca 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: fluwx
 description: The capability of implementing WeChat SDKs in Flutter. With Fluwx, developers can use WeChatSDK easily, such as sharing, payment, lanuch mini program and etc.
-version: 5.7.4
+version: 5.7.5
 homepage: https://github.com/OpenFlutter/fluwx
 
 environment: