diff --git a/components/bt/bluedroid/bta/dm/bta_dm_act.c b/components/bt/bluedroid/bta/dm/bta_dm_act.c
index 7b60655691..155602fac7 100644
--- a/components/bt/bluedroid/bta/dm/bta_dm_act.c
+++ b/components/bt/bluedroid/bta/dm/bta_dm_act.c
@@ -227,7 +227,7 @@ const tBTM_APPL_INFO bta_security = {
 
 };
 
-#define MAX_DISC_RAW_DATA_BUF       (4096)
+#define MAX_DISC_RAW_DATA_BUF       (1024)
 UINT8 g_disc_raw_data_buf[MAX_DISC_RAW_DATA_BUF];
 
 extern DEV_CLASS local_device_default_class;
diff --git a/components/bt/bluedroid/bta/include/bta_gattc_int.h b/components/bt/bluedroid/bta/include/bta_gattc_int.h
index bc200eddc3..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    8 // 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    5 // 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/include/bt_target.h b/components/bt/bluedroid/include/bt_target.h
index e9a1625e01..9d042a2b4c 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            TRUE       /* 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           3
+#define BTM_MAX_SCO_LINKS           1	//3
 #endif
 
 /* The preferred type of SCO links (2-eSCO, 0-SCO). */