diff --git a/src/main/resources/mappers/backstage/DigitalSignageMapper.xml b/src/main/resources/mappers/backstage/DigitalSignageMapper.xml
index e750da8..4489fd6 100644
--- a/src/main/resources/mappers/backstage/DigitalSignageMapper.xml
+++ b/src/main/resources/mappers/backstage/DigitalSignageMapper.xml
@@ -104,7 +104,7 @@
                tt.baidu_lon AS baiduLon,
                tt.baidu_lat AS baiduLat,
                tt.tower_name AS towerName,
-               tct.cableway_length AS cablewayWidth,
+               tct.cableway_width AS cablewayWidth,
                tct.id
         FROM tb_cablewa_trans tct
         LEFT JOIN tb_tower tt ON tct.tower_id = tt.id