diff --git a/components/bt/bluedroid/bta/dm/bta_dm_act.c b/components/bt/bluedroid/bta/dm/bta_dm_act.c
index 5cdba14b4..d16418cd3 100644
--- a/components/bt/bluedroid/bta/dm/bta_dm_act.c
+++ b/components/bt/bluedroid/bta/dm/bta_dm_act.c
@@ -698,7 +698,7 @@ void bta_dm_set_visibility(tBTA_DM_MSG *p_data)
 ** Description      Removes device, Disconnects ACL link if required.
 ****
 *******************************************************************************/
-void bta_dm_process_remove_device(BD_ADDR bd_addr)
+static void bta_dm_process_remove_device(BD_ADDR bd_addr, tBT_TRANSPORT transport)
 {
 #if (BLE_INCLUDED == TRUE && GATTC_INCLUDED == TRUE)
     /* need to remove all pending background connection before unpair */
@@ -711,12 +711,16 @@ void bta_dm_process_remove_device(BD_ADDR bd_addr)
     /* remove all cached GATT information */
     BTA_GATTC_Refresh(bd_addr, false);
 #endif
-
     if (bta_dm_cb.p_sec_cback) {
         tBTA_DM_SEC sec_event;
         bdcpy(sec_event.link_down.bd_addr, bd_addr);
         sec_event.link_down.status = HCI_SUCCESS;
-        bta_dm_cb.p_sec_cback(BTA_DM_DEV_UNPAIRED_EVT, &sec_event);
+        if (transport == BT_TRANSPORT_LE){
+            bta_dm_cb.p_sec_cback(BTA_DM_BLE_DEV_UNPAIRED_EVT, &sec_event);
+        } else {
+            bta_dm_cb.p_sec_cback(BTA_DM_DEV_UNPAIRED_EVT, &sec_event);
+        }
+
     }
 }
 
@@ -734,15 +738,11 @@ void bta_dm_remove_device(tBTA_DM_MSG *p_data)
         return;
     }
 
-    BD_ADDR other_address;
-    bdcpy(other_address, p_dev->bd_addr);
-
     /* If ACL exists for the device in the remove_bond message*/
     BOOLEAN continue_delete_dev = FALSE;
-    UINT8 other_transport = BT_TRANSPORT_INVALID;
+    UINT8 transport = p_dev->transport;
 
-    if (BTM_IsAclConnectionUp(p_dev->bd_addr, BT_TRANSPORT_LE) ||
-            BTM_IsAclConnectionUp(p_dev->bd_addr, BT_TRANSPORT_BR_EDR)) {
+    if (BTM_IsAclConnectionUp(p_dev->bd_addr, transport)) {
         APPL_TRACE_DEBUG("%s: ACL Up count  %d", __func__, bta_dm_cb.device_list.count);
         continue_delete_dev = FALSE;
 
@@ -753,13 +753,6 @@ void bta_dm_remove_device(tBTA_DM_MSG *p_data)
                 btm_remove_acl( p_dev->bd_addr, bta_dm_cb.device_list.peer_device[i].transport);
                 APPL_TRACE_DEBUG("%s:transport = %d", __func__,
                                  bta_dm_cb.device_list.peer_device[i].transport);
-
-                /* save the other transport to check if device is connected on other_transport */
-                if (bta_dm_cb.device_list.peer_device[i].transport == BT_TRANSPORT_LE) {
-                    other_transport = BT_TRANSPORT_BR_EDR;
-                } else {
-                    other_transport = BT_TRANSPORT_LE;
-                }
                 break;
             }
         }
@@ -767,35 +760,9 @@ void bta_dm_remove_device(tBTA_DM_MSG *p_data)
         continue_delete_dev = TRUE;
     }
 
-    // If it is DUMO device and device is paired as different address, unpair that device
-    // if different address
-    BOOLEAN continue_delete_other_dev = FALSE;
-    if ((other_transport && (BTM_ReadConnectedTransportAddress(other_address, other_transport))) ||
-            (!other_transport && (BTM_ReadConnectedTransportAddress(other_address, BT_TRANSPORT_BR_EDR) ||
-                                  BTM_ReadConnectedTransportAddress(other_address, BT_TRANSPORT_LE)))) {
-        continue_delete_other_dev = FALSE;
-        /* Take the link down first, and mark the device for removal when disconnected */
-        for (int i = 0; i < bta_dm_cb.device_list.count; i++) {
-            if (!bdcmp(bta_dm_cb.device_list.peer_device[i].peer_bdaddr, other_address)) {
-                bta_dm_cb.device_list.peer_device[i].conn_state = BTA_DM_UNPAIRING;
-                btm_remove_acl(other_address, bta_dm_cb.device_list.peer_device[i].transport);
-                break;
-            }
-        }
-    } else {
-        APPL_TRACE_DEBUG("%s: continue to delete the other dev ", __func__);
-        continue_delete_other_dev = TRUE;
-    }
-
     /* Delete the device mentioned in the msg */
     if (continue_delete_dev) {
-        bta_dm_process_remove_device(p_dev->bd_addr);
-    }
-
-    /* Delete the other paired device too */
-    BD_ADDR dummy_bda = {0};
-    if (continue_delete_other_dev && (bdcmp(other_address, dummy_bda) != 0)) {
-        bta_dm_process_remove_device(other_address);
+        bta_dm_process_remove_device(p_dev->bd_addr, transport);
     }
 }
 
@@ -3351,7 +3318,11 @@ void bta_dm_acl_change(tBTA_DM_MSG *p_data)
         if ( bta_dm_cb.p_sec_cback ) {
             bta_dm_cb.p_sec_cback(BTA_DM_LINK_DOWN_EVT, &conn);
             if ( issue_unpair_cb ) {
-                bta_dm_cb.p_sec_cback(BTA_DM_DEV_UNPAIRED_EVT, &conn);
+                if (p_data->acl_change.transport == BT_TRANSPORT_LE) {
+                    bta_dm_cb.p_sec_cback(BTA_DM_BLE_DEV_UNPAIRED_EVT, &conn);
+                } else {
+                    bta_dm_cb.p_sec_cback(BTA_DM_DEV_UNPAIRED_EVT, &conn);
+                }
             }
         }
     }
diff --git a/components/bt/bluedroid/bta/dm/bta_dm_api.c b/components/bt/bluedroid/bta/dm/bta_dm_api.c
index 6d0538f04..c00a2e1d5 100644
--- a/components/bt/bluedroid/bta/dm/bta_dm_api.c
+++ b/components/bt/bluedroid/bta/dm/bta_dm_api.c
@@ -570,7 +570,7 @@ void BTA_DmAddDevice(BD_ADDR bd_addr, DEV_CLASS dev_class, LINK_KEY link_key,
 ** Returns          void
 **
 *******************************************************************************/
-tBTA_STATUS BTA_DmRemoveDevice(BD_ADDR bd_addr)
+tBTA_STATUS BTA_DmRemoveDevice(BD_ADDR bd_addr, tBT_TRANSPORT transport)
 {
     tBTA_DM_API_REMOVE_DEVICE *p_msg;
 
@@ -579,6 +579,7 @@ tBTA_STATUS BTA_DmRemoveDevice(BD_ADDR bd_addr)
 
         p_msg->hdr.event = BTA_DM_API_REMOVE_DEVICE_EVT;
         bdcpy(p_msg->bd_addr, bd_addr);
+        p_msg->transport = transport;
         bta_sys_sendmsg(p_msg);
     } else {
         return BTA_FAILURE;
diff --git a/components/bt/bluedroid/bta/dm/include/bta_dm_int.h b/components/bt/bluedroid/bta/dm/include/bta_dm_int.h
index 6a41f52de..62fdd13d6 100644
--- a/components/bt/bluedroid/bta/dm/include/bta_dm_int.h
+++ b/components/bt/bluedroid/bta/dm/include/bta_dm_int.h
@@ -392,6 +392,7 @@ typedef struct {
 typedef struct {
     BT_HDR              hdr;
     BD_ADDR             bd_addr;
+    UINT8               transport;
 } tBTA_DM_API_REMOVE_DEVICE;
 
 /* data type for BTA_DM_API_EXECUTE_CBACK_EVT */
diff --git a/components/bt/bluedroid/bta/include/bta/bta_api.h b/components/bt/bluedroid/bta/include/bta/bta_api.h
index c8903bfdd..fe5379093 100644
--- a/components/bt/bluedroid/bta/include/bta/bta_api.h
+++ b/components/bt/bluedroid/bta/include/bta/bta_api.h
@@ -631,10 +631,11 @@ typedef UINT8 tBTA_SIG_STRENGTH_MASK;
 #define BTA_DM_SP_RMT_OOB_EXT_EVT       23      /* Simple Pairing Remote OOB Extended Data request. */
 #define BTA_DM_BLE_AUTH_CMPL_EVT        24      /* BLE Auth complete */
 // btla-specific --
-#define BTA_DM_DEV_UNPAIRED_EVT         25
+#define BTA_DM_DEV_UNPAIRED_EVT         25      /* BT unpair event */
 #define BTA_DM_HW_ERROR_EVT             26      /* BT Chip H/W error */
 #define BTA_DM_LE_FEATURES_READ         27      /* Cotroller specific LE features are read */
 #define BTA_DM_ENER_INFO_READ           28      /* Energy info read */
+#define BTA_DM_BLE_DEV_UNPAIRED_EVT     29      /* BLE unpair event */
 typedef UINT8 tBTA_DM_SEC_EVT;
 
 /* Structure associated with BTA_DM_ENABLE_EVT */
@@ -1632,7 +1633,7 @@ extern void BTA_DmAddDevice(BD_ADDR bd_addr, DEV_CLASS dev_class,
 **                  BTA_FAIL if operation failed.
 **
 *******************************************************************************/
-extern tBTA_STATUS BTA_DmRemoveDevice(BD_ADDR bd_addr);
+extern tBTA_STATUS BTA_DmRemoveDevice(BD_ADDR bd_addr, tBT_TRANSPORT transport);
 
 /*******************************************************************************
 **
diff --git a/components/bt/bluedroid/btc/core/btc_dm.c b/components/bt/bluedroid/btc/core/btc_dm.c
index 9f6c91105..cfd093af5 100644
--- a/components/bt/bluedroid/btc/core/btc_dm.c
+++ b/components/bt/bluedroid/btc/core/btc_dm.c
@@ -495,10 +495,23 @@ void btc_dm_sec_cb_handler(btc_msg_t *msg)
     case BTA_DM_DEV_UNPAIRED_EVT: {
 #if (SMP_INCLUDED == TRUE)
         bt_bdaddr_t bd_addr;
-        rsp_app = true;
         BTC_TRACE_DEBUG("BTA_DM_DEV_UNPAIRED_EVT");
         memcpy(bd_addr.address, p_data->link_down.bd_addr, sizeof(BD_ADDR));
         btm_set_bond_type_dev(p_data->link_down.bd_addr, BOND_TYPE_UNKNOWN);
+        if (p_data->link_down.status == HCI_SUCCESS) {
+            //remove the bonded key in the config and nvs flash.
+            btc_storage_remove_bonded_device(&bd_addr);
+        }
+#endif /* #if (SMP_INCLUDED == TRUE) */
+        break;
+    }
+    case BTA_DM_BLE_DEV_UNPAIRED_EVT: {
+#if (SMP_INCLUDED == TRUE)
+        bt_bdaddr_t bd_addr;
+        rsp_app = true;
+        BTC_TRACE_DEBUG("BTA_DM_BLE_DEV_UNPAIRED_EVT");
+        memcpy(bd_addr.address, p_data->link_down.bd_addr, sizeof(BD_ADDR));
+        btm_set_bond_type_dev(p_data->link_down.bd_addr, BOND_TYPE_UNKNOWN);
         param.remove_bond_dev_cmpl.status = ESP_BT_STATUS_FAIL;
 
         if (p_data->link_down.status == HCI_SUCCESS) {
diff --git a/components/bt/bluedroid/btc/profile/std/gap/btc_gap_ble.c b/components/bt/bluedroid/btc/profile/std/gap/btc_gap_ble.c
index 1cb321fe0..b55527b74 100644
--- a/components/bt/bluedroid/btc/profile/std/gap/btc_gap_ble.c
+++ b/components/bt/bluedroid/btc/profile/std/gap/btc_gap_ble.c
@@ -1108,7 +1108,7 @@ void btc_gap_ble_call_handler(btc_msg_t *msg)
     case BTC_GAP_BLE_REMOVE_BOND_DEV_EVT: {
         BD_ADDR bd_addr;
         memcpy(bd_addr, arg->remove_bond_device.bd_addr, sizeof(BD_ADDR));
-        BTA_DmRemoveDevice(bd_addr);
+        BTA_DmRemoveDevice(bd_addr, BT_TRANSPORT_LE);
         break;
     }
 #endif  ///SMP_INCLUDED == TRUE
diff --git a/components/bt/bluedroid/btc/profile/std/gap/btc_gap_bt.c b/components/bt/bluedroid/btc/profile/std/gap/btc_gap_bt.c
index a28cd2b72..65a953eaa 100644
--- a/components/bt/bluedroid/btc/profile/std/gap/btc_gap_bt.c
+++ b/components/bt/bluedroid/btc/profile/std/gap/btc_gap_bt.c
@@ -639,8 +639,7 @@ esp_err_t btc_gap_bt_remove_bond_device(btc_gap_bt_args_t *arg)
 {
     BD_ADDR bd_addr;
     memcpy(bd_addr, arg->rm_bond_device.bda.address, sizeof(BD_ADDR));
-    if(BTA_DmRemoveDevice(bd_addr) == BTA_SUCCESS){
-        btc_storage_remove_bonded_device(&(arg->rm_bond_device.bda));
+    if(BTA_DmRemoveDevice(bd_addr, BT_TRANSPORT_BR_EDR) == BTA_SUCCESS){
         return ESP_BT_STATUS_SUCCESS;
     }
     return ESP_BT_STATUS_FAIL;