diff --git a/sql/2.6.8升级2.6.9.sql b/sql/2.6.8升级2.6.9.sql
index 3734bcd4..e633d63a 100644
--- a/sql/2.6.8升级2.6.9.sql
+++ b/sql/2.6.8升级2.6.9.sql
@@ -58,6 +58,10 @@ alter table device
 alter table device
     change online on_line varchar(50) null;
 
+alter table device
+    add COLUMN switch_primary_sub_stream bool default false comment '开启主子码流切换的开关（0-不开启，1-开启）现在已知支持设备为 大华、TP——LINK全系设备'
+
+
 alter table device_alarm
     change deviceId device_id varchar(50) not null;
 
diff --git a/sql/初始化.sql b/sql/初始化.sql
index d61c47cc..3eed0dd4 100644
--- a/sql/初始化.sql
+++ b/sql/初始化.sql
@@ -31,6 +31,7 @@ create table wvp_device (
                             password character varying(255),
                             as_message_channel bool default false,
                             keepalive_interval_time integer,
+                            switch_primary_sub_stream bool default false,
                             constraint uk_device_device unique (device_id)
 );