diff --git a/xy_sh/internal/config/config.go b/xy_sh/internal/config/config.go
new file mode 100644
index 0000000..c91adc4
--- /dev/null
+++ b/xy_sh/internal/config/config.go
@@ -0,0 +1,36 @@
+package config
+
+import (
+	"os"
+	"time"
+)
+
+// Config 应用配置
+type Config struct {
+	ServerPort   string
+	ReadTimeout  time.Duration
+	WriteTimeout time.Duration
+	SM3Salt      string
+	SM4Key       []byte
+	CallbackURL  string
+}
+
+// Load 加载配置，优先从环境变量读取
+func Load() *Config {
+	sm4KeyStr := getEnv("SM4_KEY", "1234567890abcdef")
+	return &Config{
+		ServerPort:   getEnv("SERVER_PORT", "8080"),
+		ReadTimeout:  10 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		SM3Salt:      getEnv("SM3_SALT", "default_salt"),
+		SM4Key:       []byte(sm4KeyStr),
+		CallbackURL:  getEnv("CALLBACK_URL", ""),
+	}
+}
+
+func getEnv(key, defaultValue string) string {
+	if v := os.Getenv(key); v != "" {
+		return v
+	}
+	return defaultValue
+}
\ No newline at end of file