diff --git a/pkg/serverconfigs/server_name_config.go b/pkg/serverconfigs/server_name_config.go
index a551ecf..e7b9398 100644
--- a/pkg/serverconfigs/server_name_config.go
+++ b/pkg/serverconfigs/server_name_config.go
@@ -1,6 +1,10 @@
 package serverconfigs
 
-import "github.com/TeaOSLab/EdgeCommon/pkg/configutils"
+import (
+	"github.com/TeaOSLab/EdgeCommon/pkg/configutils"
+	"github.com/iwind/TeaGo/lists"
+	"strings"
+)
 
 type ServerNameType = string
 
@@ -18,6 +22,14 @@ type ServerNameConfig struct {
 	SubNames []string `yaml:"subNames" json:"subNames"` // 子名称，用来支持大量的域名批量管理
 }
 
+// 格式化域名
+func (this *ServerNameConfig) Normalize() {
+	this.Name = strings.ToLower(this.Name)
+	for index, subName := range this.SubNames {
+		this.SubNames[index] = strings.ToLower(subName)
+	}
+}
+
 // 判断主机名是否匹配
 func (this *ServerNameConfig) Match(name string) bool {
 	if len(this.SubNames) > 0 {
@@ -25,3 +37,29 @@ func (this *ServerNameConfig) Match(name string) bool {
 	}
 	return configutils.MatchDomains([]string{this.Name}, name)
 }
+
+// 格式化一组域名
+func NormalizeServerNames(serverNames []*ServerNameConfig) {
+	for _, serverName := range serverNames {
+		serverName.Normalize()
+	}
+}
+
+// 获取所有域名
+func PlainServerNames(serverNames []*ServerNameConfig) (result []string) {
+	NormalizeServerNames(serverNames)
+	for _, serverName := range serverNames {
+		if len(serverName.SubNames) == 0 {
+			if len(serverName.Name) > 0 && !lists.ContainsString(result, serverName.Name) {
+				result = append(result, serverName.Name)
+			}
+		} else {
+			for _, subName := range serverName.SubNames {
+				if len(subName) > 0 && !lists.ContainsString(result, subName) {
+					result = append(result, subName)
+				}
+			}
+		}
+	}
+	return result
+}
diff --git a/pkg/serverconfigs/server_name_config_test.go b/pkg/serverconfigs/server_name_config_test.go
new file mode 100644
index 0000000..f80cb61
--- /dev/null
+++ b/pkg/serverconfigs/server_name_config_test.go
@@ -0,0 +1,35 @@
+package serverconfigs
+
+import (
+	"github.com/iwind/TeaGo/logs"
+	"testing"
+)
+
+func TestNormalizeServerNames(t *testing.T) {
+	serverNames := []*ServerNameConfig{
+		{
+			Name:     "Hello.com",
+			SubNames: []string{"WoRld.com", "XYZ.com"},
+		},
+	}
+	NormalizeServerNames(serverNames)
+	logs.PrintAsJSON(serverNames, t)
+}
+
+func TestPlainServerNames(t *testing.T) {
+	serverNames := []*ServerNameConfig{
+		{
+			Name:     "Hello.com",
+			SubNames: nil,
+		},
+		{
+			Name:     "world.com",
+			SubNames: nil,
+		},
+		{
+			Name:     "",
+			SubNames: []string{"WoRld.com", "XYZ.com"},
+		},
+	}
+	logs.PrintAsJSON(PlainServerNames(serverNames), t)
+}