diff --git a/lib/generator/artifact.ts b/lib/generator/artifact.ts
index 681eb5189..1484c9dcd 100644
--- a/lib/generator/artifact.ts
+++ b/lib/generator/artifact.ts
@@ -49,7 +49,7 @@ import {
   trojanFilter,
   socks5Filter,
 } from '../utils/filter';
-import { prependFlag } from '../utils/flag';
+import { prependFlag, removeFlag } from '../utils/flag';
 import { loadLocalSnippet } from './template';
 
 export interface ArtifactOptions {
@@ -362,9 +362,12 @@ export class Artifact extends EventEmitter {
           }
         }
 
-        // 给节点名加国旗
         if (provider.addFlag) {
-          nodeConfig.nodeName = prependFlag(nodeConfig.nodeName);
+          // 给节点名加国旗
+          nodeConfig.nodeName = prependFlag(nodeConfig.nodeName, provider.removeExistingFlag);
+        } else if (provider.removeExistingFlag) {
+          // 去掉名称中的国旗
+          nodeConfig.nodeName = removeFlag(nodeConfig.nodeName);
         }
 
         // TCP Fast Open
diff --git a/lib/provider/Provider.ts b/lib/provider/Provider.ts
index ba21b4b17..52972e8da 100644
--- a/lib/provider/Provider.ts
+++ b/lib/provider/Provider.ts
@@ -15,6 +15,7 @@ export default class Provider {
   public readonly youtubePremiumFilter?: ProviderConfig['youtubePremiumFilter'];
   public readonly customFilters?: ProviderConfig['customFilters'];
   public readonly addFlag?: boolean;
+  public readonly removeExistingFlag?: boolean;
   public readonly tfo?: boolean;
   public readonly mptcp?: boolean;
   public readonly renameNode?: ProviderConfig['renameNode'];
@@ -39,6 +40,7 @@ export default class Provider {
           Joi.any().allow(Joi.function(), Joi.object({ filter: Joi.function(), supportSort: Joi.boolean().strict() }))
         ),
       addFlag: Joi.boolean().strict(),
+      removeExistingFlag: Joi.boolean().strict(),
       mptcp: Joi.boolean().strict(),
       tfo: Joi.boolean().strict(),
       startPort: Joi.number().integer().min(1024).max(65535),
@@ -57,18 +59,24 @@ export default class Provider {
       throw error;
     }
 
-    this.type = config.type;
-    this.nodeFilter = config.nodeFilter;
-    this.netflixFilter = config.netflixFilter;
-    this.youtubePremiumFilter = config.youtubePremiumFilter;
-    this.customFilters = config.customFilters;
-    this.addFlag = config.addFlag;
-    this.tfo = config.tfo;
-    this.mptcp = config.mptcp;
-    this.startPort = config.startPort;
-    this.renameNode = config.renameNode;
-    this.relayUrl = config.relayUrl;
     this.supportGetSubscriptionUserInfo = false;
+
+    [
+      'type',
+      'nodeFilter',
+      'netflixFilter',
+      'youtubePremiumFilter',
+      'customFilters',
+      'addFlag',
+      'removeExistingFlag',
+      'tfo',
+      'mptcp',
+      'startPort',
+      'renameNode',
+      'relayUrl',
+    ].forEach(key => {
+      this[key] = config[key];
+    });
   }
 
   public get nextPort(): number {
diff --git a/lib/types.ts b/lib/types.ts
index 3e884c199..1adaf8104 100644
--- a/lib/types.ts
+++ b/lib/types.ts
@@ -103,6 +103,7 @@ export interface ProviderConfig {
     readonly [name: string]: NodeNameFilterType|SortedNodeNameFilterType;
   };
   readonly addFlag?: boolean;
+  readonly removeExistingFlag?: boolean;
   readonly tfo?: boolean;
   readonly mptcp?: boolean;
   readonly renameNode?: (name: string) => string;
diff --git a/lib/utils/flag.ts b/lib/utils/flag.ts
index 46b6d4897..b3f79d77a 100644
--- a/lib/utils/flag.ts
+++ b/lib/utils/flag.ts
@@ -1,29 +1,48 @@
 import EmojiRegex from 'emoji-regex'
 import flag from '../misc/flag_cn';
 
-const flagMap: {
-  [name: string]: string;
-} = {};
+const flagMap: Map<string|RegExp, string> = new Map();
 
 Object.keys(flag).forEach(emoji => {
   flag[emoji].forEach((name: string) => {
-    flagMap[name] = emoji;
+    flagMap.set(name, emoji);
   });
 });
 
-export const prependFlag = (str: string): string => {
+export const addFlagMap = (name: string|RegExp, emoji: string): void => {
+  flagMap.set(name, emoji);
+};
+
+export const prependFlag = (str: string, removeExistingEmoji = false): string => {
   const emojiRegex = EmojiRegex();
   const existingEmoji = emojiRegex.exec(str);
 
-  // 如果已经存在 emoji 则不作处理
   if (existingEmoji) {
-    return str;
+    if (removeExistingEmoji) {
+      // 去除已有的 emoji
+      str = removeFlag(str);
+    } else {
+      // 不作处理
+      return str;
+    }
   }
 
-  for (const key in flagMap) {
-    if (flagMap.hasOwnProperty(key) && str.toUpperCase().includes(key)) {
-      return `${flagMap[key]} ${str}`;
+  for (const [key, value] of flagMap.entries()) {
+    if (typeof key === 'string') {
+      if (str.toUpperCase().includes(key)) {
+        return `${value} ${str}`;
+      }
+    } else {
+      if (key.test(str)) {
+        return `${value} ${str}`;
+      }
     }
   }
+
   return str;
 };
+
+export const removeFlag = (str: string): string => {
+  const emojiRegex = EmojiRegex();
+  return str.replace(emojiRegex, '').trim();
+};
diff --git a/test/utils/flag.test.ts b/test/utils/flag.test.ts
index f5e3ecf68..0b772feeb 100644
--- a/test/utils/flag.test.ts
+++ b/test/utils/flag.test.ts
@@ -1,5 +1,5 @@
 import test from 'ava';
-import { prependFlag } from '../../lib/utils/flag';
+import { prependFlag, removeFlag } from '../../lib/utils/flag';
 
 test('addFlag', t => {
   t.is(prependFlag('美国'), '🇺🇸 美国');
@@ -10,4 +10,12 @@ test('addFlag', t => {
   t.is(prependFlag('us'), '🇺🇸 us');
   t.is(prependFlag('🇺🇸 jp'), '🇺🇸 jp');
   t.is(prependFlag('🇯🇵 US'), '🇯🇵 US');
+  t.is(prependFlag('🇺🇸 jp', true), '🇯🇵 jp');
+  t.is(prependFlag('🇯🇵 🇺🇸 jp', true), '🇯🇵 jp');
+  t.is(prependFlag('🇺🇸 🇯🇵 US', true), '🇺🇸 US');
+});
+
+test('removeFlag', t => {
+  t.is(removeFlag('🇺🇸 jp'), 'jp');
+  t.is(removeFlag('🇺🇸 🇺🇸 jp'), 'jp');
 });