diff --git a/src/views/system/Department/device/index.vue b/src/views/system/Department/device/index.vue
index b38cb8e4..26450235 100644
--- a/src/views/system/Department/device/index.vue
+++ b/src/views/system/Department/device/index.vue
@@ -168,9 +168,9 @@
                 </template>
                 <template #registryTime="slotProps">
                     <span>{{
-                        dayjs(slotProps.registryTime).format(
+                        slotProps.registryTime ? dayjs(slotProps.registryTime).format(
                             'YYYY-MM-DD YY:mm:ss',
-                        )
+                        ) : '-'
                     }}</span>
                 </template>
                 <template #action="slotProps">