diff --git a/leopard-web/src/util/amis.tsx b/leopard-web/src/util/amis.tsx
index 7a3cc7d..44e3b8d 100644
--- a/leopard-web/src/util/amis.tsx
+++ b/leopard-web/src/util/amis.tsx
@@ -250,7 +250,7 @@ export function filterableField(mapping: Array<Record<string, any>>, multiple =
 export function time(field: string) {
   return {
     type: 'tpl',
-    tpl: `\${IF(${field}, DATETOSTR(${field}, 'YYYY-MM-DD HH:mm:ss'), undefined)}`,
+    tpl: `\${IF(${field}, DATETOSTR(${field}, 'YYYY-MM-DD HH:mm:ss'), '/')}`,
   }
 }