diff --git a/src/page/main/forewarning/indicator-config/modules/interface.js b/src/page/main/forewarning/indicator-config/modules/interface.js
index 3254c7236727b9327c1e02573bdac02c17d40d49..34f714188471699c2218a20946b129b4c4db4162 100644
--- a/src/page/main/forewarning/indicator-config/modules/interface.js
+++ b/src/page/main/forewarning/indicator-config/modules/interface.js
@@ -15,7 +15,7 @@ const setParams = (res, { id, class_id }) => {
                 is_linked: e.is_linkage == 1,
             };
         }) || [],
-        duration: res.time,
+        duration: +res.time,
         duration_unit: res.unit,
         check_period: res.inspection_cycle,
         is_enabled: res.state,