diff --git a/web/src/main/resources/application-dev.yml b/web/src/main/resources/application-dev.yml
index 891de3c..6686996 100644
--- a/web/src/main/resources/application-dev.yml
+++ b/web/src/main/resources/application-dev.yml
@@ -70,5 +70,5 @@ scanCodeMode:
     - 14
   trayCodeTypes:
     - 14
-# 照片 視頻保存多久
+# 照片 視頻保存多久 单位天
 deleteFileDays: 365
\ No newline at end of file
diff --git a/web/src/main/resources/application-prod.yml b/web/src/main/resources/application-prod.yml
index a75080a..47fc7b4 100644
--- a/web/src/main/resources/application-prod.yml
+++ b/web/src/main/resources/application-prod.yml
@@ -70,5 +70,5 @@ scanCodeMode:
     - 14
   trayCodeTypes:
     - 14
-# 照片 視頻保存多久
+# 照片 視頻保存多久 单位天
 deleteFileDays: 365
\ No newline at end of file
diff --git a/web/src/main/resources/application-test.yml b/web/src/main/resources/application-test.yml
index 90415ee..5b4f662 100644
--- a/web/src/main/resources/application-test.yml
+++ b/web/src/main/resources/application-test.yml
@@ -70,5 +70,5 @@ scanCodeMode:
     - 14
   trayCodeTypes:
     - 14
-# 照片 視頻保存多久
+# 照片 視頻保存多久 单位天
 deleteFileDays: 365
\ No newline at end of file