diff --git a/lock-client.js b/lock-client.js
index 645e020..e593ad1 100644
--- a/lock-client.js
+++ b/lock-client.js
@@ -33,7 +33,7 @@ class LockClient extends EventEmitter {
     this.maxRetries = options.maxRetries || 5;
     
     this.socket = null;
-    this.requestId = null;
+    this.requests = new Map();
     this.isLocked = false;
     this.lockType = null;
     this.timeoutHandle = null;
@@ -74,12 +74,14 @@ class LockClient extends EventEmitter {
     await this.ensureConnected();
 
     return new Promise((resolve, reject) => {
-      if (this.isLocked) {
-        reject(new Error('Lock already held'));
-        return;
-      }
+      // if (this.isLocked) {
+      //   reject(new Error('Lock already held'));
+      //   return;
+      // }
 
       this.requestId = uuidv4();
+      this.requests.set(this.requestId, resolve)
+
       this.lockType = type;
 
       // 发送锁请求
diff --git a/lock-client.namedpipe.js b/lock-client.namedpipe.js
index 78d098a..04ca790 100644
--- a/lock-client.namedpipe.js
+++ b/lock-client.namedpipe.js
@@ -19,7 +19,7 @@ class NamedPipeRWLock extends LockClient {
    * @param {number} options.maxRetries - 最大重连次数，默认5
    */
   constructor(resource,  options = {}) {
-    super(options);
+    super(resource, options);
     this.resource = resource;
     this.pipePath = options.connect.pipePath;
   }
diff --git a/lock.js b/lock.js
index abf3958..70ddf1a 100644
--- a/lock.js
+++ b/lock.js
@@ -82,7 +82,7 @@ class LockServer {
   handleReadLock(clientId, resource, requestId, lock) {
     if (!lock.writer) {
       // 可以立即获取读锁
-      lock.readers.add(clientId);
+      lock.readers.add(`${clientId}_${requestId}`);
       this.sendToClient(clientId, {
         type: 'lockGranted',
         requestId,
@@ -108,7 +108,7 @@ class LockServer {
     if (lock.readers.size === 0 && !lock.writer) {
       // 可以立即获取写锁
       lock.writer = clientId;
-      this.sendToClient(clientId, {
+      this.sendToClient(`${clientId}_${requestId}`, {
         type: 'lockGranted',
         requestId,
         resource,