diff --git a/.github/workflows/delete_old_runs.yml b/.github/workflows/delete_old_runs.yml
index 6467fb6..6a9b6da 100644
--- a/.github/workflows/delete_old_runs.yml
+++ b/.github/workflows/delete_old_runs.yml
@@ -9,7 +9,12 @@ on:
   schedule:
     - cron: "0 */12 * * *" # 每 12 小时执行一次
   workflow_dispatch: # 可以手动执行
-
+    inputs:
+      hour_count:
+        description: "You want to delete records from how many hours ago?"
+        required: true
+        default: "168"
+        type: string
 jobs:
   # 检查成绩
   DeleteOldRuns:
diff --git a/.github/workflows/demo.yml b/.github/workflows/demo.yml
deleted file mode 100644
index d143662..0000000
--- a/.github/workflows/demo.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-name: Example Workflow
-
-on:
-  workflow_dispatch:
-    inputs:
-      integer_input:
-        description: 'Enter an integer value'
-        required: true
-        default: 10
-        type: integer
-
-jobs:
-  example-job:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Print integer input
-        run: echo "Integer input is ${{ github.event.inputs.integer_input }}"