diff --git a/check.git.sh b/check.git.sh
new file mode 100644
index 0000000..33f6512
--- /dev/null
+++ b/check.git.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+DOMAIN="git.baqi.dev"
+PORT=443
+
+echo "🔍 检测 $DOMAIN:$PORT 的 SSL/TLS 状态..."
+echo "--------------------------------------------------"
+
+# 1. 显示证书链
+echo -e "\n📜 证书链信息:"
+openssl s_client -connect $DOMAIN:$PORT -servername $DOMAIN -showcerts </dev/null 2>/dev/null | openssl x509 -noout -issuer -subject -dates
+
+# 2. 检查证书过期时间
+echo -e "\n⏳ 证书有效期:"
+openssl s_client -connect $DOMAIN:$PORT -servername $DOMAIN </dev/null 2>/dev/null | openssl x509 -noout -dates
+
+# 3. 测试 TLS 协议兼容性
+for v in ssl3 tls1 tls1_1 tls1_2 tls1_3; do
+    echo -ne "\n⚡ 测试 $v ... "
+    result=$(openssl s_client -connect $DOMAIN:$PORT -servername $DOMAIN -$v </dev/null 2>&1)
+    if echo "$result" | grep -q "Cipher is"; then
+        echo "✅ 支持"
+    else
+        echo "❌ 不支持"
+    fi
+done
+
+# 4. 用 curl 模拟 git
+echo -e "\n🌐 使用 curl 模拟访问:"
+curl -vk https://$DOMAIN/ 2>&1 | grep "SSL" || echo "curl 请求正常"
+
+echo -e "\n✅ 检测完成。"