diff --git a/handler/router/metadata_test.go b/handler/router/metadata_test.go
new file mode 100644
index 00000000..ab74b018
--- /dev/null
+++ b/handler/router/metadata_test.go
@@ -0,0 +1,286 @@
+package router
+
+import (
+	"testing"
+	"time"
+
+	"github.com/go-gost/core/handler"
+	"github.com/go-gost/core/logger"
+)
+
+func TestParseMetadata_Empty(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(nil)); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.readTimeout != 0 {
+		t.Errorf("readTimeout = %v, want 0", h.md.readTimeout)
+	}
+	if h.md.bufferSize != defaultBufferSize {
+		t.Errorf("bufferSize = %d, want %d", h.md.bufferSize, defaultBufferSize)
+	}
+	if h.md.entryPoint != "" {
+		t.Errorf("entryPoint = %q, want empty", h.md.entryPoint)
+	}
+	if h.md.ingress != nil {
+		t.Errorf("ingress = %v, want nil", h.md.ingress)
+	}
+	if h.md.sd != nil {
+		t.Errorf("sd = %v, want nil", h.md.sd)
+	}
+	if h.md.sdCacheExpiration != defaultCacheExpiration {
+		t.Errorf("sdCacheExpiration = %v, want %v", h.md.sdCacheExpiration, defaultCacheExpiration)
+	}
+	if h.md.sdRenewInterval != defaultTTL {
+		t.Errorf("sdRenewInterval = %v, want %v", h.md.sdRenewInterval, defaultTTL)
+	}
+	if h.md.router != nil {
+		t.Errorf("router = %v, want nil", h.md.router)
+	}
+	if h.md.routerCacheEnabled {
+		t.Error("routerCacheEnabled = true, want false")
+	}
+	if h.md.observerPeriod != 5*time.Second {
+		t.Errorf("observerPeriod = %v, want 5s", h.md.observerPeriod)
+	}
+	if h.md.observerResetTraffic {
+		t.Error("observerResetTraffic = true, want false")
+	}
+}
+
+func TestParseMetadata_ReadTimeout(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"readTimeout": "10s",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.readTimeout != 10*time.Second {
+		t.Errorf("readTimeout = %v, want 10s", h.md.readTimeout)
+	}
+}
+
+func TestParseMetadata_BufferSize(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"router.bufferSize": 8192,
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.bufferSize != 8192 {
+		t.Errorf("bufferSize = %d, want 8192", h.md.bufferSize)
+	}
+}
+
+func TestParseMetadata_BufferSize_Zero(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"router.bufferSize": 0,
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.bufferSize != defaultBufferSize {
+		t.Errorf("bufferSize = %d, want %d", h.md.bufferSize, defaultBufferSize)
+	}
+}
+
+func TestParseMetadata_EntryPoint(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"entrypoint": ":8080",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.entryPoint != ":8080" {
+		t.Errorf("entryPoint = %q, want :8080", h.md.entryPoint)
+	}
+}
+
+func TestParseMetadata_SDCacheExpiration(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"sd.cache.expiration": "30s",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.sdCacheExpiration != 30*time.Second {
+		t.Errorf("sdCacheExpiration = %v, want 30s", h.md.sdCacheExpiration)
+	}
+}
+
+func TestParseMetadata_SDRenewInterval(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"sd.renewInterval": "30s",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.sdRenewInterval != 30*time.Second {
+		t.Errorf("sdRenewInterval = %v, want 30s", h.md.sdRenewInterval)
+	}
+}
+
+func TestParseMetadata_SDRenewInterval_TooSmall(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"sd.renewInterval": "100ms",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.sdRenewInterval != defaultTTL {
+		t.Errorf("sdRenewInterval = %v, want %v", h.md.sdRenewInterval, defaultTTL)
+	}
+}
+
+func TestParseMetadata_RouterCache(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"router.cache":            true,
+		"router.cache.expiration": "30s",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if !h.md.routerCacheEnabled {
+		t.Error("routerCacheEnabled = false, want true")
+	}
+	if h.md.routerCacheExpiration != 30*time.Second {
+		t.Errorf("routerCacheExpiration = %v, want 30s", h.md.routerCacheExpiration)
+	}
+}
+
+func TestParseMetadata_RouterCache_DefaultExpiration(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"router.cache": true,
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.routerCacheExpiration != defaultCacheExpiration {
+		t.Errorf("routerCacheExpiration = %v, want %v", h.md.routerCacheExpiration, defaultCacheExpiration)
+	}
+}
+
+func TestParseMetadata_ObserverPeriod(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"observePeriod": "10s",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.observerPeriod != 10*time.Second {
+		t.Errorf("observerPeriod = %v, want 10s", h.md.observerPeriod)
+	}
+}
+
+func TestParseMetadata_ObserverPeriod_TooSmall(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"observePeriod": "100ms",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.observerPeriod != time.Second {
+		t.Errorf("observerPeriod = %v, want 1s", h.md.observerPeriod)
+	}
+}
+
+func TestParseMetadata_ObserverResetTraffic(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"observer.resetTraffic": true,
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if !h.md.observerResetTraffic {
+		t.Error("observerResetTraffic = false, want true")
+	}
+}
+
+func TestParseMetadata_LimiterRefresh(t *testing.T) {
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"limiter.refreshInterval": "30s",
+		"limiter.cleanupInterval": "60s",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.limiterRefreshInterval != 30*time.Second {
+		t.Errorf("limiterRefreshInterval = %v, want 30s", h.md.limiterRefreshInterval)
+	}
+	if h.md.limiterCleanupInterval != 60*time.Second {
+		t.Errorf("limiterCleanupInterval = %v, want 60s", h.md.limiterCleanupInterval)
+	}
+}
+
+func TestParseMetadata_FallbackKeys(t *testing.T) {
+	// Verify fallback key patterns for observerPeriod
+	h := &routerHandler{
+		options: handler.Options{
+			Logger: logger.Default(),
+		},
+	}
+	if err := h.parseMetadata(testMD(map[string]any{
+		"observer.period": "3s",
+	})); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if h.md.observerPeriod != 3*time.Second {
+		t.Errorf("observerPeriod = %v, want 3s (from observer.period)", h.md.observerPeriod)
+	}
+}
\ No newline at end of file