diff --git a/common/constants.go b/common/constants.go
index 98e6abd..82a1fa5 100644
--- a/common/constants.go
+++ b/common/constants.go
@@ -57,7 +57,8 @@ var TurnstileCheckEnabled = false
 var RegisterEnabled = true
 var UserSelfDeletionEnabled = false
 
-var EmailDomainRestrictionEnabled = false
+var EmailDomainRestrictionEnabled = false // 是否启用邮箱域名限制
+var EmailAliasRestrictionEnabled = false  // 是否启用邮箱别名限制
 var EmailDomainWhitelist = []string{
 	"gmail.com",
 	"163.com",
diff --git a/controller/misc.go b/controller/misc.go
index ecc1f26..8a3e7f6 100644
--- a/controller/misc.go
+++ b/controller/misc.go
@@ -122,12 +122,17 @@ func SendEmailVerification(c *gin.Context) {
 		})
 		return
 	}
+	parts := strings.Split(email, "@")
+	if len(parts) != 2 {
+		c.JSON(http.StatusOK, gin.H{
+			"success": false,
+			"message": "无效的邮箱地址",
+		})
+		return
+	}
+	localPart := parts[0]
+	domainPart := parts[1]
 	if common.EmailDomainRestrictionEnabled {
-		parts := strings.Split(email, "@")
-		localPart := parts[0]
-		domainPart := parts[1]
-
-		containsSpecialSymbols := strings.Contains(localPart, "+") || strings.Count(localPart, ".") > 1
 		allowed := false
 		for _, domain := range common.EmailDomainWhitelist {
 			if domainPart == domain {
@@ -135,13 +140,7 @@ func SendEmailVerification(c *gin.Context) {
 				break
 			}
 		}
-		if allowed && !containsSpecialSymbols {
-			c.JSON(http.StatusOK, gin.H{
-				"success": false,
-				"message": "Your email address is allowed.",
-			})
-			return
-		} else {
+		if !allowed {
 			c.JSON(http.StatusOK, gin.H{
 				"success": false,
 				"message": "The administrator has enabled the email domain name whitelist, and your email address is not allowed due to special symbols or it's not in the whitelist.",
@@ -149,6 +148,17 @@ func SendEmailVerification(c *gin.Context) {
 			return
 		}
 	}
+	if common.EmailAliasRestrictionEnabled {
+		containsSpecialSymbols := strings.Contains(localPart, "+") || strings.Count(localPart, ".") > 1
+		if containsSpecialSymbols {
+			c.JSON(http.StatusOK, gin.H{
+				"success": false,
+				"message": "管理员已启用邮箱地址别名限制，您的邮箱地址由于包含特殊符号而被拒绝。",
+			})
+			return
+		}
+	}
+
 	if model.IsEmailAlreadyTaken(email) {
 		c.JSON(http.StatusOK, gin.H{
 			"success": false,
diff --git a/model/option.go b/model/option.go
index 2a32c72..a1b0738 100644
--- a/model/option.go
+++ b/model/option.go
@@ -46,6 +46,7 @@ func InitOptionMap() {
 	common.OptionMap["DataExportEnabled"] = strconv.FormatBool(common.DataExportEnabled)
 	common.OptionMap["ChannelDisableThreshold"] = strconv.FormatFloat(common.ChannelDisableThreshold, 'f', -1, 64)
 	common.OptionMap["EmailDomainRestrictionEnabled"] = strconv.FormatBool(common.EmailDomainRestrictionEnabled)
+	common.OptionMap["EmailAliasRestrictionEnabled"] = strconv.FormatBool(common.EmailAliasRestrictionEnabled)
 	common.OptionMap["EmailDomainWhitelist"] = strings.Join(common.EmailDomainWhitelist, ",")
 	common.OptionMap["SMTPServer"] = ""
 	common.OptionMap["SMTPFrom"] = ""
@@ -183,6 +184,8 @@ func updateOptionMap(key string, value string) (err error) {
 			common.UserSelfDeletionEnabled = boolValue
 		case "EmailDomainRestrictionEnabled":
 			common.EmailDomainRestrictionEnabled = boolValue
+		case "EmailAliasRestrictionEnabled":
+			common.EmailAliasRestrictionEnabled = boolValue
 		case "AutomaticDisableChannelEnabled":
 			common.AutomaticDisableChannelEnabled = boolValue
 		case "AutomaticEnableChannelEnabled":
diff --git a/web/src/components/SystemSetting.js b/web/src/components/SystemSetting.js
index ddf9615..4d5889d 100644
--- a/web/src/components/SystemSetting.js
+++ b/web/src/components/SystemSetting.js
@@ -47,6 +47,7 @@ const SystemSetting = () => {
     RegisterEnabled: '',
     UserSelfDeletionEnabled: false,
     EmailDomainRestrictionEnabled: '',
+    EmailAliasRestrictionEnabled: '',
     SMTPSSLEnabled: '',
     EmailDomainWhitelist: [],
     // telegram login
@@ -105,6 +106,7 @@ const SystemSetting = () => {
       case 'TelegramOAuthEnabled':
       case 'TurnstileCheckEnabled':
       case 'EmailDomainRestrictionEnabled':
+      case 'EmailAliasRestrictionEnabled':
       case 'SMTPSSLEnabled':
       case 'RegisterEnabled':
       case 'UserSelfDeletionEnabled':
@@ -562,6 +564,14 @@ const SystemSetting = () => {
               checked={inputs.EmailDomainRestrictionEnabled === 'true'}
             />
           </Form.Group>
+          <Form.Group widths={3}>
+            <Form.Checkbox
+              label='启用邮箱别名限制（例如：ab.cd@gmail.com）'
+              name='EmailAliasRestrictionEnabled'
+              onChange={handleInputChange}
+              checked={inputs.EmailAliasRestrictionEnabled === 'true'}
+            />
+          </Form.Group>
           <Form.Group widths={2}>
             <Form.Dropdown
               label='允许的邮箱域名'