diff --git a/Service%EF%BC%9AOpenSSH.md b/Service%EF%BC%9AOpenSSH.md
new file mode 100644
index 0000000..460f45c
--- /dev/null
+++ b/Service%EF%BC%9AOpenSSH.md
@@ -0,0 +1,5 @@
+# 將 OpenSSH 的預設工具改為 Powershell
+
+```powershell
+New-ItemProperty -Path "HKLM:\SOFTWARE\OpenSSH" -Name DefaultShell -Value "C:\Program Files\Git\bin\bash.exe" -PropertyType String -Force
+```
\ No newline at end of file