diff --git a/xy_sh/internal/config/config.go b/xy_sh/internal/config/config.go
new file mode 100644
index 0000000..4152291
--- /dev/null
+++ b/xy_sh/internal/config/config.go
@@ -0,0 +1,35 @@
+package config
+
+import "os"
+
+type Config struct {
+	ServerPort string
+	SM3Salt    string
+	SM4Key     []byte
+}
+
+func LoadConfig() *Config {
+	port := os.Getenv("SERVER_PORT")
+	if port == "" {
+		port = "8080"
+	}
+
+	sm3Salt := os.Getenv("SM3_SALT")
+	if sm3Salt == "" {
+		sm3Salt = "default_sm3_salt"
+	}
+
+	sm4KeyStr := os.Getenv("SM4_KEY")
+	var sm4Key []byte
+	if sm4KeyStr != "" {
+		sm4Key = []byte(sm4KeyStr)
+	} else {
+		sm4Key = []byte("1234567890123456")
+	}
+
+	return &Config{
+		ServerPort: port,
+		SM3Salt:    sm3Salt,
+		SM4Key:     sm4Key,
+	}
+}
\ No newline at end of file