diff --git a/en/device-dev/driver/driver-message-mechanism-management.md b/en/device-dev/driver/driver-message-mechanism-management.md
index d853c836dd9d3c852e8e7418de1313555ec26534..3ea214d2ade48cb8955cd793fd84aadc2cc38d81 100644
--- a/en/device-dev/driver/driver-message-mechanism-management.md
+++ b/en/device-dev/driver/driver-message-mechanism-management.md
@@ -24,7 +24,7 @@ The message mechanism provides the following features:
 </th>
 </tr>
 </thead>
-<tbody><tr id="row1582426174114"><td class="cellrowborder" valign="top" width="46.379999999999995%" headers="mcps1.2.3.1.1 "><p id="p182341916144420"><a name="p182341916144420"></a><a name="p182341916144420"></a>struct HdfIoService *HdfIoServiceBind(const char *serviceName, mode_t permission)</p>
+<tbody><tr id="row1582426174114"><td class="cellrowborder" valign="top" width="46.379999999999995%" headers="mcps1.2.3.1.1 "><p id="p182341916144420"><a name="p182341916144420"></a><a name="p182341916144420"></a>struct HdfIoService *HdfIoServiceBind(const char *serviceName)</p>
 </td>
 <td class="cellrowborder" valign="top" width="53.620000000000005%" headers="mcps1.2.3.1.2 "><p id="p58272614113"><a name="p58272614113"></a><a name="p58272614113"></a>Obtains a specified driver service. After the service is obtained, the <strong id="b9799159433"><a name="b9799159433"></a><a name="b9799159433"></a>Dispatch</strong> function of the service is used to send messages to the driver.</p>
 </td>
@@ -100,7 +100,7 @@ The message mechanism provides the following features:
             HDF_LOGE("test msg is null");
             return -1;
         }
-        struct HdfIoService *serv = HdfIoServiceBind("sample_driver", 0);
+        struct HdfIoService *serv = HdfIoServiceBind("sample_driver");
         if (serv == NULL) {
             HDF_LOGE("fail to get service");
             return -1;
@@ -159,7 +159,7 @@ The message mechanism provides the following features:
         ```
         int RegisterListen()
         {
-            struct HdfIoService *serv = HdfIoServiceBind("sample_driver", 0);
+            struct HdfIoService *serv = HdfIoServiceBind("sample_driver");
             if (serv == NULL) {
                 HDF_LOGE("fail to get service");
                 return -1;
diff --git a/en/device-dev/driver/hdfdevelopment-example.md b/en/device-dev/driver/hdfdevelopment-example.md
index 2238a7e4ceed1d78951ce7182b6b91f1dba36a50..d6743f7662f1606a6097780a069dba1db8414ace 100644
--- a/en/device-dev/driver/hdfdevelopment-example.md
+++ b/en/device-dev/driver/hdfdevelopment-example.md
@@ -195,7 +195,7 @@ out:
 int main()
 {
     char *sendData = "default event info";
-    struct HdfIoService *serv = HdfIoServiceBind(SAMPLE_SERVICE_NAME, 0);
+    struct HdfIoService *serv = HdfIoServiceBind(SAMPLE_SERVICE_NAME);
     if (serv == NULL) {
         HDF_LOGE("fail to get service %s", SAMPLE_SERVICE_NAME);
         return HDF_FAILURE;
diff --git "a/zh-cn/device-dev/driver/HDF\345\274\200\345\217\221\345\256\236\344\276\213.md" "b/zh-cn/device-dev/driver/HDF\345\274\200\345\217\221\345\256\236\344\276\213.md"
index aa3d4e46a4c44ebd20c128740d33399da7e1c141..0cf1ebe7a3a6ae33a0752a61fc151acfcb08a45c 100644
--- "a/zh-cn/device-dev/driver/HDF\345\274\200\345\217\221\345\256\236\344\276\213.md"
+++ "b/zh-cn/device-dev/driver/HDF\345\274\200\345\217\221\345\256\236\344\276\213.md"
@@ -195,7 +195,7 @@ out:
 int main()
 {
     char *sendData = "default event info";
-    struct HdfIoService *serv = HdfIoServiceBind(SAMPLE_SERVICE_NAME, 0);
+    struct HdfIoService *serv = HdfIoServiceBind(SAMPLE_SERVICE_NAME);
     if (serv == NULL) {
         HDF_LOGE("fail to get service %s", SAMPLE_SERVICE_NAME);
         return HDF_FAILURE;
diff --git "a/zh-cn/device-dev/driver/\351\251\261\345\212\250\346\266\210\346\201\257\346\234\272\345\210\266\347\256\241\347\220\206.md" "b/zh-cn/device-dev/driver/\351\251\261\345\212\250\346\266\210\346\201\257\346\234\272\345\210\266\347\256\241\347\220\206.md"
index ebdb610158da9d7fd0450f30a8234f4a8e6ab704..ac271c2f1e520c0d8d1c31cf4ab5ab79ef498727 100644
--- "a/zh-cn/device-dev/driver/\351\251\261\345\212\250\346\266\210\346\201\257\346\234\272\345\210\266\347\256\241\347\220\206.md"
+++ "b/zh-cn/device-dev/driver/\351\251\261\345\212\250\346\266\210\346\201\257\346\234\272\345\210\266\347\256\241\347\220\206.md"
@@ -24,7 +24,7 @@
 </th>
 </tr>
 </thead>
-<tbody><tr id="row1582426174114"><td class="cellrowborder" valign="top" width="46.379999999999995%" headers="mcps1.2.3.1.1 "><p id="p182341916144420"><a name="p182341916144420"></a><a name="p182341916144420"></a>struct HdfIoService *HdfIoServiceBind(const char *serviceName, mode_t permission)</p>
+<tbody><tr id="row1582426174114"><td class="cellrowborder" valign="top" width="46.379999999999995%" headers="mcps1.2.3.1.1 "><p id="p182341916144420"><a name="p182341916144420"></a><a name="p182341916144420"></a>struct HdfIoService *HdfIoServiceBind(const char *serviceName)</p>
 </td>
 <td class="cellrowborder" valign="top" width="53.620000000000005%" headers="mcps1.2.3.1.2 "><p id="p58272614113"><a name="p58272614113"></a><a name="p58272614113"></a>用户态获取驱动的服务，获取该服务之后通过服务中的Dispatch方法向驱动发送消息。</p>
 </td>
@@ -100,7 +100,7 @@
             HDF_LOGE("test msg is null");
             return -1;
         }
-        struct HdfIoService *serv = HdfIoServiceBind("sample_driver", 0);
+        struct HdfIoService *serv = HdfIoServiceBind("sample_driver");
         if (serv == NULL) {
             HDF_LOGE("fail to get service");
             return -1;
@@ -159,7 +159,7 @@
         ```
         int RegisterListen()
         {
-            struct HdfIoService *serv = HdfIoServiceBind("sample_driver", 0);
+            struct HdfIoService *serv = HdfIoServiceBind("sample_driver");
             if (serv == NULL) {
                 HDF_LOGE("fail to get service");
                 return -1;