diff --git a/components/bt/Kconfig b/components/bt/Kconfig
index e2f7d97340..4e8e317927 100644
--- a/components/bt/Kconfig
+++ b/components/bt/Kconfig
@@ -8,11 +8,11 @@ config BT_ENABLED
     help
         This compiles in the low-level BT stack.
 
-menu "BT_UTIL"
+menu "BT UTILITY OPTION"
 visible if BT_ENABLED
 
 config BT_USE_ETS_PRINT
-	bool "BT USE ETS_PRINT"
+	bool "BT use print which has lock"
 	default y
 	depends on BT_ENABLED
 	help
@@ -20,6 +20,13 @@ config BT_USE_ETS_PRINT
 
 endmenu #menu
 
+config BTC_TASK_STACK_SIZE
+	int "BT event (callback to application) task stack size"
+	default 2048
+	depends on BT_ENABLED
+	help
+		This select btc task stack size
+
 #config BT_BTLE
 #    bool "Enable BTLE"
 #    depends on BT_ENABLED
diff --git a/components/bt/bluedroid/bta/include/bta_api.h b/components/bt/bluedroid/bta/include/bta_api.h
index 9b8a405995..182482ef0f 100644
--- a/components/bt/bluedroid/bta/include/bta_api.h
+++ b/components/bt/bluedroid/bta/include/bta_api.h
@@ -29,6 +29,7 @@
 #include "bt_types.h"
 #include "btm_api.h"
 #include "uipc_msg.h"
+#include "sdp_api.h"
 
 #if BLE_INCLUDED == TRUE
 #include "btm_ble_api.h"
diff --git a/components/bt/bluedroid/bta/include/bta_gattc_int.h b/components/bt/bluedroid/bta/include/bta_gattc_int.h
index b915005ba8..d50c66226e 100644
--- a/components/bt/bluedroid/bta/include/bta_gattc_int.h
+++ b/components/bt/bluedroid/bta/include/bta_gattc_int.h
@@ -77,12 +77,12 @@ typedef UINT16 tBTA_GATTC_INT_EVT;
 
 /* max client application GATTC can support */
 #ifndef     BTA_GATTC_CL_MAX
-#define     BTA_GATTC_CL_MAX    4 // 32
+#define     BTA_GATTC_CL_MAX    3 // 32
 #endif
 
 /* max known devices GATTC can support */
 #ifndef     BTA_GATTC_KNOWN_SR_MAX
-#define     BTA_GATTC_KNOWN_SR_MAX    4 // 10
+#define     BTA_GATTC_KNOWN_SR_MAX    3 // 10
 #endif
 
 #define BTA_GATTC_CONN_MAX      GATT_MAX_PHY_CHANNEL
diff --git a/components/bt/bluedroid/btc/include/btc_task.h b/components/bt/bluedroid/btc/include/btc_task.h
index 923b8b84e5..1574dae2f3 100644
--- a/components/bt/bluedroid/btc/include/btc_task.h
+++ b/components/bt/bluedroid/btc/include/btc_task.h
@@ -17,11 +17,7 @@
 
 #include <stdint.h>
 #include "bt_defs.h"
-
-#define BTC_TASK_QUEUE_NUM  20
-#define BTC_TASK_STACK_SIZE 4096
-#define BTC_TASK_NAME       "btcT"
-#define BTC_TASK_PRIO       (configMAX_PRIORITIES - 5)
+#include "thread.h"
 
 typedef struct btc_msg {
     uint8_t sig;    //event signal
diff --git a/components/bt/bluedroid/hci/hci_hal_h4.c b/components/bt/bluedroid/hci/hci_hal_h4.c
index b3b2856fba..eb61903578 100644
--- a/components/bt/bluedroid/hci/hci_hal_h4.c
+++ b/components/bt/bluedroid/hci/hci_hal_h4.c
@@ -101,8 +101,8 @@ static bool hal_open(const hci_hal_callbacks_t *upper_callbacks)
 
     hci_hal_env_init(HCI_HAL_SERIAL_BUFFER_SIZE, SIZE_MAX);
 
-    xHciH4Queue = xQueueCreate(60, sizeof(BtTaskEvt_t));
-    xTaskCreate(hci_hal_h4_rx_handler, "HciH4T", 1024 + 256, NULL, configMAX_PRIORITIES - 3, &xHciH4TaskHandle);
+    xHciH4Queue = xQueueCreate(HCI_H4_QUEUE_NUM, sizeof(BtTaskEvt_t));
+    xTaskCreate(hci_hal_h4_rx_handler, HCI_H4_TASK_NAME, HCI_H4_TASK_STACK_SIZE, NULL, HCI_H4_TASK_PRIO, &xHciH4TaskHandle);
 
     //register vhci host cb
     API_vhci_host_register_callback(&vhci_host_cb);
diff --git a/components/bt/bluedroid/hci/hci_layer.c b/components/bt/bluedroid/hci/hci_layer.c
index 29704d5be3..8fc55d08d3 100644
--- a/components/bt/bluedroid/hci/hci_layer.c
+++ b/components/bt/bluedroid/hci/hci_layer.c
@@ -113,8 +113,8 @@ int hci_start_up(void)
         goto error;
     }
 
-    xHciHostQueue = xQueueCreate(60, sizeof(BtTaskEvt_t));
-    xTaskCreate(hci_host_thread_handler, "HciHostT", (1024+256), NULL, configMAX_PRIORITIES - 3, &xHciHostTaskHandle);
+    xHciHostQueue = xQueueCreate(HCI_HOST_QUEUE_NUM, sizeof(BtTaskEvt_t));
+    xTaskCreate(hci_host_thread_handler, HCI_HOST_TASK_NAME, HCI_HOST_TASK_STACK_SIZE, NULL, HCI_HOST_TASK_PRIO, &xHciHostTaskHandle);
 
     packet_fragmenter->init(&packet_fragmenter_callbacks);
     hal->open(&hal_callbacks);
diff --git a/components/bt/bluedroid/include/bt_target.h b/components/bt/bluedroid/include/bt_target.h
index 1bedf45f52..451badffa5 100644
--- a/components/bt/bluedroid/include/bt_target.h
+++ b/components/bt/bluedroid/include/bt_target.h
@@ -403,7 +403,7 @@
 
 /* Includes SCO if TRUE */
 #ifndef BTM_SCO_INCLUDED
-#define BTM_SCO_INCLUDED            FALSE       /* TRUE includes SCO code */
+#define BTM_SCO_INCLUDED            FALSE	//TRUE       /* TRUE includes SCO code */
 #endif
 
 /* Includes SCO if TRUE */
@@ -480,7 +480,7 @@
 
 /* The number of SCO links. */
 #ifndef BTM_MAX_SCO_LINKS
-#define BTM_MAX_SCO_LINKS           1
+#define BTM_MAX_SCO_LINKS           1	//3
 #endif
 
 /* The preferred type of SCO links (2-eSCO, 0-SCO). */
diff --git a/components/bt/bluedroid/osi/include/thread.h b/components/bt/bluedroid/osi/include/thread.h
index 60e41990d8..d4d41542b8 100644
--- a/components/bt/bluedroid/osi/include/thread.h
+++ b/components/bt/bluedroid/osi/include/thread.h
@@ -43,6 +43,26 @@ enum {
     // SIG_BTIF_WORK = 0xff
 };
 
+#define HCI_HOST_TASK_STACK_SIZE	1024
+#define HCI_HOST_TASK_PRIO			(configMAX_PRIORITIES - 3)
+#define HCI_HOST_TASK_NAME			"hciHostT"
+#define HCI_HOST_QUEUE_NUM			30
+
+#define HCI_H4_TASK_STACK_SIZE		1024
+#define HCI_H4_TASK_PRIO			(configMAX_PRIORITIES - 3)
+#define HCI_H4_TASK_NAME			"hciH4T"
+#define HCI_H4_QUEUE_NUM			30
+
+#define BTU_TASK_STACK_SIZE			4096
+#define BTU_TASK_PRIO				(configMAX_PRIORITIES - 1)
+#define BTU_TASK_NAME				"btuT"
+#define BTU_QUEUE_NUM				30
+
+#define BTC_TASK_QUEUE_NUM  		20
+#define BTC_TASK_STACK_SIZE 		CONFIG_BTC_TASK_STACK_SIZE	//by menuconfig
+#define BTC_TASK_NAME       		"btcT"
+#define BTC_TASK_PRIO       		(configMAX_PRIORITIES - 5)
+
 void btu_task_post(uint32_t sig);
 void hci_host_task_post(void);
 void hci_hal_h4_task_post(void);
diff --git a/components/bt/bluedroid/stack/btm/btm_ble_gap.c b/components/bt/bluedroid/stack/btm/btm_ble_gap.c
index 0e484d9526..906300a8a8 100644
--- a/components/bt/bluedroid/stack/btm/btm_ble_gap.c
+++ b/components/bt/bluedroid/stack/btm/btm_ble_gap.c
@@ -2615,13 +2615,15 @@ BOOLEAN btm_ble_update_inq_result(tINQ_DB_ENT *p_i, UINT8 addr_type, UINT8 evt_t
                                              BTM_BLE_AD_TYPE_16SRV_CMPL, &len)) != NULL) {
                 UINT8 i;
                 for (i = 0; i + 2 <= len; i = i + 2) {
-                    /* if this BLE device support HID over LE, set HID Major in class of device */
+#if BTA_HH_LE_INCLUDED == TRUE
+					/* if this BLE device support HID over LE, set HID Major in class of device */
                     if ((p_uuid16[i] | (p_uuid16[i + 1] << 8)) == UUID_SERVCLASS_LE_HID) {
                         p_cur->dev_class[0] = 0;
                         p_cur->dev_class[1] = BTM_COD_MAJOR_PERIPHERAL;
                         p_cur->dev_class[2] = 0;
                         break;
                     }
+#endif /* BTA_HH_LE_INCLUDED */
                 }
             }
         }
diff --git a/components/bt/bluedroid/stack/btu/btu_init.c b/components/bt/bluedroid/stack/btu/btu_init.c
index 68c4e03b5c..150073c005 100644
--- a/components/bt/bluedroid/stack/btu/btu_init.c
+++ b/components/bt/bluedroid/stack/btu/btu_init.c
@@ -200,9 +200,8 @@ void BTU_StartUp(void)
         goto error_exit;
     }
 
-    xBtuQueue = xQueueCreate(60, sizeof(BtTaskEvt_t));
-    xTaskCreate(btu_task_thread_handler, "BtuT", 2048 + 1024, NULL, configMAX_PRIORITIES - 1, &xBtuTaskHandle);
-
+    xBtuQueue = xQueueCreate(BTU_QUEUE_NUM, sizeof(BtTaskEvt_t));
+    xTaskCreate(btu_task_thread_handler, BTU_TASK_NAME, BTU_TASK_STACK_SIZE, NULL, BTU_TASK_PRIO, &xBtuTaskHandle);
     btu_task_post(SIG_BTU_START_UP);
     /*
         // Continue startup on bt workqueue thread.
diff --git a/components/bt/bluedroid/stack/gap/gap_ble.c b/components/bt/bluedroid/stack/gap/gap_ble.c
index 70c4a22f69..b560fad651 100644
--- a/components/bt/bluedroid/stack/gap/gap_ble.c
+++ b/components/bt/bluedroid/stack/gap/gap_ble.c
@@ -28,6 +28,7 @@
 #include "gatt_int.h"
 #include "btm_int.h"
 #include "hcimsgs.h"
+#include "sdpdefs.h"
 
 #define GAP_CHAR_ICON_SIZE          2
 #define GAP_CHAR_DEV_NAME_SIZE      248
diff --git a/components/bt/bluedroid/stack/gatt/gatt_api.c b/components/bt/bluedroid/stack/gatt/gatt_api.c
index 1a61d60b14..c464508da9 100644
--- a/components/bt/bluedroid/stack/gatt/gatt_api.c
+++ b/components/bt/bluedroid/stack/gatt/gatt_api.c
@@ -33,7 +33,8 @@
 #include "gatt_int.h"
 #include "l2c_api.h"
 #include "btm_int.h"
-
+#include "sdpdefs.h"
+#include "sdp_api.h"
 
 /*******************************************************************************
 **
diff --git a/components/bt/bluedroid/stack/gatt/gatt_attr.c b/components/bt/bluedroid/stack/gatt/gatt_attr.c
index b7a87192b4..b0aa3f71d1 100644
--- a/components/bt/bluedroid/stack/gatt/gatt_attr.c
+++ b/components/bt/bluedroid/stack/gatt/gatt_attr.c
@@ -28,6 +28,7 @@
 
 #include "gatt_api.h"
 #include "gatt_int.h"
+#include "sdpdefs.h"
 
 #if BLE_INCLUDED == TRUE
 
diff --git a/components/bt/bluedroid/stack/include/gap_api.h b/components/bt/bluedroid/stack/include/gap_api.h
index 2dc9836a88..1f22db008d 100644
--- a/components/bt/bluedroid/stack/include/gap_api.h
+++ b/components/bt/bluedroid/stack/include/gap_api.h
@@ -19,6 +19,7 @@
 #ifndef GAP_API_H
 #define GAP_API_H
 
+#include "sdpdefs.h"
 #include "profiles_api.h"
 #include "btm_api.h"
 #include "l2c_api.h"
diff --git a/components/bt/component.mk b/components/bt/component.mk
index 35c34e773b..a591dee3ac 100644
--- a/components/bt/component.mk
+++ b/components/bt/component.mk
@@ -83,7 +83,7 @@ COMPONENT_SRCDIRS := 	bluedroid/bta/dm			\
 			bluedroid				\
 			.
 
-include $(IDF_PATH)/make/component_common.mk
+#include $(IDF_PATH)/make/component_common.mk
 
 ALL_LIB_FILES := $(patsubst %,$(COMPONENT_PATH)/lib/lib%.a,$(LIBS))
 $(COMPONENT_LIBRARY): $(ALL_LIB_FILES)
diff --git a/examples/09_a2dp/components/bluedroid_demos/component.mk b/examples/09_a2dp/components/bluedroid_demos/component.mk
index 3260abf0ef..714c9cd13c 100755
--- a/examples/09_a2dp/components/bluedroid_demos/component.mk
+++ b/examples/09_a2dp/components/bluedroid_demos/component.mk
@@ -27,4 +27,4 @@ COMPONENT_SRCDIRS :=	\
 CFLAGS += -Wno-error=unused-label -Wno-error=return-type -Wno-error=missing-braces -Wno-error=pointer-sign -Wno-error=parentheses -I./include
 
 
-include $(IDF_PATH)/make/component_common.mk
+#include $(IDF_PATH)/make/component_common.mk