diff --git a/samples/dynamic_auth/dynamic_auth_sample.c b/samples/dynamic_auth/dynamic_auth_sample.c
index 87eafdd..8ea9058 100644
--- a/samples/dynamic_auth/dynamic_auth_sample.c
+++ b/samples/dynamic_auth/dynamic_auth_sample.c
@@ -50,7 +50,7 @@ static int _publish_msg(void *client)
 {
     char topicName[128] = {0};
     int num = 18;
-    HAL_Snprintf(topicName, 128, "/%s/%s/upload/event", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
+    HAL_Snprintf(topicName, 128, "/%s/%s/upload", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
 
     PublishParams pub_params = DEFAULT_PUB_PARAMS;
     
@@ -67,7 +67,7 @@ static int _publish_msg(void *client)
 static int _register_subscribe_topics(void *client)
 {
     static char topic_name[128] = {0};
-    HAL_Snprintf(topic_name, 128, "/%s/%s/upload/event", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
+    HAL_Snprintf(topic_name, 128, "/%s/%s/set", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
 
     SubscribeParams sub_params = DEFAULT_SUB_PARAMS;
     sub_params.on_message_handler = on_message_callback;
diff --git a/samples/mqtt/mqtt_sample.c b/samples/mqtt/mqtt_sample.c
index 719d8a5..8a214cb 100644
--- a/samples/mqtt/mqtt_sample.c
+++ b/samples/mqtt/mqtt_sample.c
@@ -155,7 +155,7 @@ static int _setup_connect_init_params(MQTTInitParams* initParams)
 static int _publish_msg(void *client)
 {
     char topicName[128] = {0};
-    HAL_Snprintf(topicName, 128, "/%s/%s/upload/event", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
+    HAL_Snprintf(topicName, 128, "/%s/%s/upload", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
 
     PublishParams pub_params = DEFAULT_PUB_PARAMS;
     pub_params.qos = QOS1;
@@ -182,7 +182,7 @@ static int _publish_msg(void *client)
 static int _register_subscribe_topics(void *client)
 {
     static char topic_name[128] = {0};
-    int size = HAL_Snprintf(topic_name, sizeof(topic_name), "/%s/%s/upload/event", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
+    int size = HAL_Snprintf(topic_name, sizeof(topic_name), "/%s/%s/set", UIOT_MY_PRODUCT_SN, UIOT_MY_DEVICE_SN);
     if (size < 0 || size > sizeof(topic_name) - 1)
     {
         HAL_Printf("topic content length not enough! content size:%d  buf size:%d\n", size, (int)sizeof(topic_name));