diff --git a/subsys/bluetooth/mesh/Kconfig b/subsys/bluetooth/mesh/Kconfig
index 374dd435345..693a3474804 100644
--- a/subsys/bluetooth/mesh/Kconfig
+++ b/subsys/bluetooth/mesh/Kconfig
@@ -389,6 +389,25 @@ config BT_MESH_RELAY_ADV_SETS
 	  Maximum of simultaneous relay message support. Requires controller support
 	  multiple advertising sets.
 
+config BT_MESH_ADV_EXT_RELAY_USING_MAIN_ADV_SET
+	bool "Use the main advertising set to relay messages"
+	depends on BT_MESH_RELAY_ADV_SETS > 0
+	help
+	  When this option is enabled, there is a message that needs to be
+	  relayed, all relay advertising sets defined by
+	  CONFIG_BT_MESH_RELAY_ADV_SETS are busy with relaying messages
+	  and the main advertising set is not busy with sending local
+	  messages, the stack will use the main advertising set to relay
+	  the message. This maximizes the utilization efficiency of
+	  advertising sets, which is helpful for the sending of dense
+	  relays. With CONFIG_BT_MESH_RELAY_RETRANSMIT_COUNT value
+	  greater than zero, this can noticeably delay transmission of
+	  local messages. When Friend feature is enabled and the node is
+	  in a friendship, this option can delay transmission of local
+	  messages thus requiring bigger CONFIG_BT_MESH_FRIEND_RECV_WIN
+	  value. This in turn will result in increase of the power
+	  consumption of the Low Power node.
+
 config BT_MESH_ADV_EXT_GATT_SEPARATE
 	bool "Use a separate extended advertising set for GATT Server Advertising"
 	depends on BT_MESH_GATT_SERVER
diff --git a/subsys/bluetooth/mesh/adv.c b/subsys/bluetooth/mesh/adv.c
index 16dd22bb61a..d3d0add80f0 100644
--- a/subsys/bluetooth/mesh/adv.c
+++ b/subsys/bluetooth/mesh/adv.c
@@ -142,11 +142,12 @@ struct net_buf *bt_mesh_adv_buf_get(k_timeout_t timeout)
 						K_POLL_MODE_NOTIFY_ONLY,
 						&bt_mesh_adv_queue,
 						0),
+#if defined(CONFIG_BT_MESH_ADV_EXT_RELAY_USING_MAIN_ADV_SET)
 		K_POLL_EVENT_STATIC_INITIALIZER(K_POLL_TYPE_FIFO_DATA_AVAILABLE,
 						K_POLL_MODE_NOTIFY_ONLY,
 						&bt_mesh_relay_queue,
 						0),
-
+#endif /* CONFIG_BT_MESH_ADV_EXT_RELAY_USING_MAIN_ADV_SET */
 	};
 
 	err = k_poll(events, ARRAY_SIZE(events), timeout);
diff --git a/subsys/bluetooth/mesh/adv_ext.c b/subsys/bluetooth/mesh/adv_ext.c
index 30d143e6c48..effebff941d 100644
--- a/subsys/bluetooth/mesh/adv_ext.c
+++ b/subsys/bluetooth/mesh/adv_ext.c
@@ -65,11 +65,14 @@ static void send_pending_adv(struct k_work *work);
 static bool schedule_send(struct bt_mesh_ext_adv *adv);
 
 static STRUCT_SECTION_ITERABLE(bt_mesh_ext_adv, adv_main) = {
-	.tag = (BT_MESH_LOCAL_ADV |
+	.tag = (
 #if !defined(CONFIG_BT_MESH_ADV_EXT_GATT_SEPARATE)
 		BT_MESH_PROXY_ADV |
 #endif /* !CONFIG_BT_MESH_ADV_EXT_GATT_SEPARATE */
-		BT_MESH_RELAY_ADV),
+#if defined(CONFIG_BT_MESH_ADV_EXT_RELAY_USING_MAIN_ADV_SET)
+		BT_MESH_RELAY_ADV |
+#endif /* CONFIG_BT_MESH_ADV_EXT_RELAY_USING_MAIN_ADV_SET */
+		BT_MESH_LOCAL_ADV),
 
 	.work = Z_WORK_DELAYABLE_INITIALIZER(send_pending_adv),
 };
@@ -324,7 +327,9 @@ void bt_mesh_adv_buf_relay_ready(void)
 	}
 
 	/* Attempt to use the main adv set for the sending of relay messages. */
-	(void)schedule_send(&adv_main);
+	if (IS_ENABLED(CONFIG_BT_MESH_ADV_EXT_RELAY_USING_MAIN_ADV_SET)) {
+		(void)schedule_send(&adv_main);
+	}
 }
 
 void bt_mesh_adv_init(void)