diff --git a/apps/assets/serializers/system_user.py b/apps/assets/serializers/system_user.py
index 62ab54683..0f08b347f 100644
--- a/apps/assets/serializers/system_user.py
+++ b/apps/assets/serializers/system_user.py
@@ -108,7 +108,7 @@ class SystemUserSerializer(AuthSerializerMixin, BulkOrgResourceModelSerializer):
         protocol = self.get_initial_value("protocol")
         if username:
             regx = alphanumeric_re
-            if protocol == SystemUser.Protocol.telnet:
+            if protocol == SystemUser.Protocol.telnet or protocol == SystemUser.Protocol.rdp:
                 regx = alphanumeric_cn_re
             if not regx.match(username):
                 raise serializers.ValidationError(_('Special char not allowed'))
diff --git a/apps/common/validators.py b/apps/common/validators.py
index 8e7e504ed..0c81b1e4e 100644
--- a/apps/common/validators.py
+++ b/apps/common/validators.py
@@ -15,7 +15,7 @@ alphanumeric = RegexValidator(r'^[0-9a-zA-Z_@\-\.]*$', _('Special char not allow
 
 alphanumeric_re = re.compile(r'^[0-9a-zA-Z_@\-\.]*$')
 
-alphanumeric_cn_re = re.compile(r'^[0-9a-zA-Z_@\-\.\u4E00-\u9FA5]*$')
+alphanumeric_cn_re = re.compile(r'^[0-9a-zA-Z_@\$\-\.\u4E00-\u9FA5]*$')
 
 
 class ProjectUniqueValidator(UniqueTogetherValidator):