diff --git a/bin/tsg_log_field.conf b/bin/tsg_log_field.conf
index fac4bee..b47e4ee 100644
--- a/bin/tsg_log_field.conf
+++ b/bin/tsg_log_field.conf
@@ -49,4 +49,5 @@ STRING		common_clinet_location	41
 STRING		common_server_location	42
 STRING		quic_sni			43
 STRING		ssl_ja3_fingerprint		44
-STRING		common_data_center	45
\ No newline at end of file
+STRING		common_data_center	45
+STRING		common_l7_protocol		46
\ No newline at end of file
diff --git a/src/tsg_entry.cpp b/src/tsg_entry.cpp
index 4a170d7..cd8b738 100644
--- a/src/tsg_entry.cpp
+++ b/src/tsg_entry.cpp
@@ -193,7 +193,7 @@ static int init_context(void **pme, tsg_protocol_t proto, struct Maat_rule_t *p_
 	return 0;
 }
 
-static char *schema_index2string(tsg_protocol_t proto)
+char *tsg_schema_index2string(tsg_protocol_t proto)
 {
 	char *schema_field_value=NULL;
 
@@ -258,7 +258,7 @@ static int master_send_log(struct streaminfo *a_stream, struct Maat_rule_t *p_re
 	{
 		schema_field_name=log_field_id2name(g_tsg_log_instance, LOG_COMMON_SCHAME_TYPE);
 
-		schema_field_value=schema_index2string(identify_info->proto);
+		schema_field_value=tsg_schema_index2string(identify_info->proto);
 		if(schema_field_value!=NULL)
 		{
 			TLD_append(TLD_handle, schema_field_name, (void *)schema_field_value, TLD_TYPE_STRING);
diff --git a/src/tsg_entry.h b/src/tsg_entry.h
index 1459c51..337a5a2 100644
--- a/src/tsg_entry.h
+++ b/src/tsg_entry.h
@@ -210,6 +210,7 @@ int tsg_scan_shared_policy(Maat_feather_t maat_feather, struct _identify_info *i
 void location_free_data(int table_id, MAAT_PLUGIN_EX_DATA* ad, long argl, void* argp);
 void ASN_free_data(int table_id, MAAT_PLUGIN_EX_DATA* ad, long argl, void* argp);
 void subscribe_id_free_data(int table_id, MAAT_PLUGIN_EX_DATA* ad, long argl, void* argp);
+char *tsg_schema_index2string(tsg_protocol_t proto);
 
 
 #endif
diff --git a/src/tsg_send_log.cpp b/src/tsg_send_log.cpp
index 0c43608..1d03a44 100644
--- a/src/tsg_send_log.cpp
+++ b/src/tsg_send_log.cpp
@@ -188,12 +188,19 @@ static int set_common_sub_action(struct TLD_handle_t *handle, char *field_name,
 int set_common_field_from_label(struct tsg_log_instance_t *_instance, struct TLD_handle_t *_handle, struct streaminfo *a_stream)
 {
 	char buff[512]={0};
+	char *l7_protocol=NULL;
 	struct _location_info_t *location=NULL;
 	struct _session_attribute_label_t *internal_label=NULL;
 
 	internal_label=(struct _session_attribute_label_t *)project_req_get_struct(a_stream, _instance->internal_project_id);
 	if(internal_label!=NULL)
-	{
+	{		
+		l7_protocol=tsg_schema_index2string(internal_label->proto);
+		if(l7_protocol!=NULL)
+		{			
+			TLD_append(_handle, _instance->id2field[LOG_COMMON_L7_PROTOCOL].name, (void *)l7_protocol, TLD_TYPE_STRING);
+		}
+		
 		TLD_append(_handle, _instance->id2field[LOG_COMMON_ESTABLISH_LATENCY_MS].name, (void *)internal_label->establish_latency_ms, TLD_TYPE_LONG);
 
 		if(internal_label->client_asn!=NULL)
diff --git a/src/tsg_send_log_internal.h b/src/tsg_send_log_internal.h
index 0cc43b4..be01b7c 100644
--- a/src/tsg_send_log_internal.h
+++ b/src/tsg_send_log_internal.h
@@ -70,6 +70,7 @@ typedef enum _tsg_log_field_id
 	LOG_QUIC_SNI,
 	LOG_SSL_JA3_FINGERPRINT,
 	LOG_COMMON_DATA_CENTER,
+	LOG_COMMON_L7_PROTOCOL,
 	LOG_COMMON_MAX
 }tsg_log_field_id_t;