diff --git a/components/bt/bluedroid/device/controller.c b/components/bt/bluedroid/device/controller.c
index c7fc98d6c..08564052d 100644
--- a/components/bt/bluedroid/device/controller.c
+++ b/components/bt/bluedroid/device/controller.c
@@ -221,6 +221,10 @@ static void start_up(void)
         }
 
         if (HCI_LE_DATA_LEN_EXT_SUPPORTED(features_ble.as_array)) {
+            /* set default tx data length to MAX 251 */
+            response = AWAIT_COMMAND(packet_factory->make_ble_write_suggested_default_data_length(BTM_BLE_DATA_SIZE_MAX, BTM_BLE_DATA_TX_TIME_MAX));
+            packet_parser->parse_generic_command_complete(response);
+
             response = AWAIT_COMMAND(packet_factory->make_ble_read_suggested_default_data_length());
             packet_parser->parse_ble_read_suggested_default_data_length_response(
                 response,
diff --git a/components/bt/bluedroid/hci/hci_packet_factory.c b/components/bt/bluedroid/hci/hci_packet_factory.c
index 6d5592b75..c4bb96b16 100644
--- a/components/bt/bluedroid/hci/hci_packet_factory.c
+++ b/components/bt/bluedroid/hci/hci_packet_factory.c
@@ -154,6 +154,17 @@ static BT_HDR *make_ble_read_suggested_default_data_length(void)
     return make_command_no_params(HCI_BLE_READ_DEFAULT_DATA_LENGTH);
 }
 
+static BT_HDR *make_ble_write_suggested_default_data_length(uint16_t SuggestedMaxTxOctets, uint16_t SuggestedMaxTxTime)
+{
+    uint8_t *stream;
+    uint8_t parameter_size = sizeof(uint16_t) + sizeof(uint16_t);
+    BT_HDR *packet = make_command(HCI_BLE_WRITE_DEFAULT_DATA_LENGTH, parameter_size, &stream);
+
+    UINT16_TO_STREAM(stream, SuggestedMaxTxOctets);
+    UINT16_TO_STREAM(stream, SuggestedMaxTxTime);
+    return packet;
+}
+
 static BT_HDR *make_ble_set_event_mask(const bt_event_mask_t *event_mask)
 {
     uint8_t *stream;
@@ -215,6 +226,7 @@ static const hci_packet_factory_t interface = {
     make_ble_read_local_supported_features,
     make_ble_read_resolving_list_size,
     make_ble_read_suggested_default_data_length,
+    make_ble_write_suggested_default_data_length,
     make_ble_set_event_mask
 };
 
diff --git a/components/bt/bluedroid/hci/include/hci_packet_factory.h b/components/bt/bluedroid/hci/include/hci_packet_factory.h
index 879962c2f..11f0053a5 100644
--- a/components/bt/bluedroid/hci/include/hci_packet_factory.h
+++ b/components/bt/bluedroid/hci/include/hci_packet_factory.h
@@ -40,6 +40,7 @@ typedef struct {
     BT_HDR *(*make_ble_read_local_supported_features)(void);
     BT_HDR *(*make_ble_read_resolving_list_size)(void);
     BT_HDR *(*make_ble_read_suggested_default_data_length)(void);
+    BT_HDR *(*make_ble_write_suggested_default_data_length)(uint16_t SuggestedMaxTxOctets, uint16_t SuggestedMaxTxTime);
     BT_HDR *(*make_ble_set_event_mask)(const bt_event_mask_t *event_mask);
 } hci_packet_factory_t;