diff --git a/base/config/example_external_config.ini b/base/config/example_external_config.ini
index 149dea0a5b..af67ea8547 100644
--- a/base/config/example_external_config.ini
+++ b/base/config/example_external_config.ini
@@ -18,6 +18,11 @@
 ;custom_proxy_group=UnblockNeteaseMusic`select`云音乐解锁`[]DIRECT
 ;custom_proxy_group=Telegram`select`新加坡`[]Proxy
 custom_proxy_group=!!import:snippets/groups_forcerule.txt
+; Examples of using use and rule in custom_proxy_group
+; custom_proxy_group=Hong Kong`select`.*`.*
+; custom_proxy_group=Hong Kong`select`!!FILTER:(?i)港|hk|hongkong|hong kong`.*
+; custom_proxy_group=Japan`select`!!PROVIDER:provider1`(?i)日本|jp|japan`[]Japan Auto
+; custom_proxy_group=US`url-test`!!PROVIDER:provider2`(?i)美国|us|united states`http://www.gstatic.com/generate_204`300
 
 ;Options for custom rulesets
 enable_rule_generator=false
diff --git a/base/config/example_external_config.toml b/base/config/example_external_config.toml
index 0e446af185..03215de56c 100644
--- a/base/config/example_external_config.toml
+++ b/base/config/example_external_config.toml
@@ -25,6 +25,24 @@ clash_rule_base = "base/forcerule.yml"
 [[custom_groups]]
 import = "snippets/groups_forcerule.toml"
 
+# Example of using filter in custom_groups
+[[custom_groups]]
+name = "Hong Kong"
+type = "select"
+use = ["Subscription 1"]
+filter = "(?i)港|hk|hongkong|hong kong"
+rule = ["[]Hong Kong Auto"]
+
+[[custom_groups]]
+name = "Japan"
+type = "url-test"
+use = ["Subscription 1"]
+filter = "(?i)日本|jp|japan"
+rule = ["[]Japan Auto"]
+url = "http://www.gstatic.com/generate_204"
+interval = 300
+
+
 #[[rulesets]]
 #import = ""
 
diff --git a/base/config/example_external_config.yml b/base/config/example_external_config.yml
index 6c3ef2f240..ccf6559586 100644
--- a/base/config/example_external_config.yml
+++ b/base/config/example_external_config.yml
@@ -5,6 +5,25 @@ custom:
   proxy_groups:
   - {import: snippets/groups_forcerule.txt}
 
+  # Example of using filter in proxy_groups
+  - name: "Hong Kong"
+    type: "select"
+    use:
+      - "Subscription 1"
+    filter: "(?i)港|hk|hongkong|hong kong"
+    rule:
+      - "[]Hong Kong Auto"
+
+  - name: "Japan"
+    type: "url-test"
+    use:
+      - "Subscription 1"
+    filter: "(?i)日本|jp|japan"
+    rule:
+      - "[]Japan Auto"
+    url: "http://www.gstatic.com/generate_204"
+    interval: 300
+
 #  rulesets:
 #  - {import: snippets/ruleset_remote.txt}
 
diff --git a/src/config/binding.h b/src/config/binding.h
index e069869d50..649971499a 100644
--- a/src/config/binding.h
+++ b/src/config/binding.h
@@ -80,6 +80,7 @@ namespace toml
             conf.Timeout = find_or(v, "timeout", 5);
             conf.Proxies = find_or<StrArray>(v, "rule", {});
             conf.UsingProvider = find_or<StrArray>(v, "use", {});
+            conf.Filter = find_or<String>(v, "filter", "");
             if(conf.Proxies.empty() && conf.UsingProvider.empty())
                 throw serialization_error(format_error("Proxy Group must contains at least one of proxy match rule or provider!", v.location(), "here"), v.location());
             if(v.contains("disable-udp"))
@@ -254,6 +255,10 @@ namespace INIBinding
                         conf.UsingProvider.reserve(conf.UsingProvider.size() + list.size());
                         std::move(list.begin(), list.end(), std::back_inserter(conf.UsingProvider));
                     }
+                    else if(startsWith(vArray[i], "!!FILTER:")) 
+                    {
+                        conf.Filter = vArray[i].substr(9); // Remove "!!FILTER:" prefix
+                    }
                     else
                         conf.Proxies.emplace_back(std::move(vArray[i]));
                 }
diff --git a/src/config/proxygroup.h b/src/config/proxygroup.h
index 07dbddc182..2d6cd2caa4 100644
--- a/src/config/proxygroup.h
+++ b/src/config/proxygroup.h
@@ -35,6 +35,7 @@ struct ProxyGroupConfig
     Boolean DisableUdp;
     Boolean Persistent;
     Boolean EvaluateBeforeUse;
+    String Filter;
 
     String TypeStr() const
     {
diff --git a/src/generator/config/subexport.cpp b/src/generator/config/subexport.cpp
index 2cb2281516..7d5250aa4b 100644
--- a/src/generator/config/subexport.cpp
+++ b/src/generator/config/subexport.cpp
@@ -793,6 +793,9 @@ void proxyToClash(std::vector<Proxy> &nodes, YAML::Node &yamlnode, const ProxyGr
         }
         if(!filtered_nodelist.empty())
             singlegroup["proxies"] = filtered_nodelist;
+        
+        if(!x.Filter.empty())
+            singlegroup["filter"] = x.Filter;
         if(group_block)
             singlegroup.SetStyle(YAML::EmitterStyle::Block);
         else
diff --git a/src/handler/settings.cpp b/src/handler/settings.cpp
index a90bec7a8b..d86bd145f7 100644
--- a/src/handler/settings.cpp
+++ b/src/handler/settings.cpp
@@ -181,7 +181,7 @@ void readGroup(YAML::Node node, string_array &dest, bool scope_limit = true)
             dest.emplace_back("!!import:" + name);
             continue;
         }
-        std::string url = "http://www.gstatic.com/generate_204", interval = "300", tolerance, timeout;
+        std::string url = "http://www.gstatic.com/generate_204", interval = "300", tolerance, timeout, filter;
         object["name"] >>= name;
         object["type"] >>= type;
         tempArray.emplace_back(name);
@@ -190,6 +190,7 @@ void readGroup(YAML::Node node, string_array &dest, bool scope_limit = true)
         object["interval"] >>= interval;
         object["tolerance"] >>= tolerance;
         object["timeout"] >>= timeout;
+        object["filter"] >>= filter;
         for(std::size_t j = 0; j < object["rule"].size(); j++)
             tempArray.emplace_back(safe_as<std::string>(object["rule"][j]));
         switch(hash_(type))
@@ -208,6 +209,12 @@ void readGroup(YAML::Node node, string_array &dest, bool scope_limit = true)
             tempArray.emplace_back(url);
             tempArray.emplace_back(interval + "," + timeout + "," + tolerance);
         }
+        
+        if(!filter.empty())
+        {
+            // Add filter as a special rule with !!FILTER: prefix
+            tempArray.emplace_back("!!FILTER:" + filter);
+        }
 
         std::string strLine = join(tempArray, "`");
         dest.emplace_back(std::move(strLine));