diff --git a/components/esp32/include/esp_wifi.h b/components/esp32/include/esp_wifi.h
index 697d7e610..2881eb1fe 100755
--- a/components/esp32/include/esp_wifi.h
+++ b/components/esp32/include/esp_wifi.h
@@ -773,6 +773,70 @@ typedef void (*esp_vendor_ie_cb_t) (void *ctx, wifi_vendor_ie_type_t type, const
   */
 esp_err_t esp_wifi_set_vendor_ie_cb(esp_vendor_ie_cb_t cb, void *ctx);
 
+/**
+  * @brief     Set maximum WiFi transmiting power
+  *
+  * @attention WiFi transmiting power is divided to six levels in phy init data.
+  *            Level0 represents highest transmiting power and level5 represents lowest
+  *            transmiting power. Packets of different rates are transmitted in
+  *            different powers according to the configuration in phy init data.
+  *            This API only sets maximum WiFi transmiting power. If this API is called,
+  *            the transmiting power of every packet will be less than or equal to the
+  *            value set by this API. If this API is not called, the value of maximum
+  *            transmitting power set in phy_init_data.bin or menuconfig (depend on
+  *            whether to use phy init data in partition or not) will be used. Default
+  *            value is level0. Values passed in power are mapped to transmit power
+  *            levels as follows:
+  *            - [78, 127]: level0
+  *            - [76, 77]: level1
+  *            - [74, 75]: level2
+  *            - [68, 73]: level3
+  *            - [60, 67]: level4
+  *            - [52, 59]: level5
+  *            - [44, 51]: level5 - 2dBm
+  *            - [34, 43]: level5 - 4.5dBm
+  *            - [28, 33]: level5 - 6dBm
+  *            - [20, 27]: level5 - 8dBm
+  *            - [8, 19]: level5 - 11dBm
+  *            - [-128, 7]: level5 - 14dBm
+  *
+  * @param     power  Maximum WiFi transmiting power.
+  *
+  * @return
+  *    - ESP_OK: succeed
+  *    - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
+  *    - ESP_ERR_WIFI_NOT_START: WiFi is not started by esp_wifi_start
+  */
+esp_err_t esp_wifi_set_max_tx_power(int8_t power);
+
+/**
+  * @brief     Get maximum WiFi transmiting power
+  *
+  * @attention This API gets maximum WiFi transmiting power. Values got
+  *            from power are mapped to transmit power levels as follows:
+  *            - 78: 19.5dBm
+  *            - 76: 19dBm
+  *            - 74: 18.5dBm
+  *            - 68: 17dBm
+  *            - 60: 15dBm
+  *            - 52: 13dBm
+  *            - 44: 11dBm
+  *            - 34: 8.5dBm
+  *            - 28: 7dBm
+  *            - 20: 5dBm
+  *            - 8:  2dBm
+  *            - -4: -1dBm
+  *
+  * @param     power  Maximum WiFi transmiting power.
+  *
+  * @return
+  *    - ESP_OK: succeed
+  *    - ESP_ERR_WIFI_NOT_INIT: WiFi is not initialized by esp_wifi_init
+  *    - ESP_ERR_WIFI_NOT_START: WiFi is not started by esp_wifi_start
+  *    - ESP_ERR_WIFI_ARG: invalid argument
+  */
+esp_err_t esp_wifi_get_max_tx_power(int8_t *power);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/components/esp32/lib b/components/esp32/lib
index 7084133a8..57b3072bd 160000
--- a/components/esp32/lib
+++ b/components/esp32/lib
@@ -1 +1 @@
-Subproject commit 7084133a855f9f818904f6eae885f33af52710e2
+Subproject commit 57b3072bd3fd2f7759225d8407443e9e983520ae