diff --git a/scratch-gui/scripts/patch-config.js b/scratch-gui/scripts/patch-config.js
index 33082d89..8eebdce5 100644
--- a/scratch-gui/scripts/patch-config.js
+++ b/scratch-gui/scripts/patch-config.js
@@ -21,7 +21,7 @@ function getConfigForEnv(env) {
         case 'test':
             return { url: 'https://test-service.001code.cn', disabledev: false };
         case 'prod':
-            return { url: 'https://service.001code.cn', disabledev: true };
+            return { url: 'https://service.001code.com', disabledev: true };
         case 'start':
         default:
             return { url: 'http://127.0.0.1:8000', disabledev: false };
diff --git a/scratch-gui/scripts/test-cpp-regressions.cjs b/scratch-gui/scripts/test-cpp-regressions.cjs
index 10d9f837..a8ac45f6 100644
--- a/scratch-gui/scripts/test-cpp-regressions.cjs
+++ b/scratch-gui/scripts/test-cpp-regressions.cjs
@@ -1,4 +1,4 @@
-// Regression tests for variable scopes in the editor interpreter.
+// Regression tests for variable scopes and return control flow in the editor interpreter.
 // Run: node scripts/test-cpp-regressions.cjs
 const assert = require('assert');
 const fs = require('fs');
@@ -15,7 +15,7 @@ const compiled = babel.transformSync(source, {
 const silentConsole = {log() {}, warn() {}, error() {}};
 const context = {exports: {}, require, setTimeout, console: silentConsole, window: {}};
 vm.runInNewContext(compiled, context, {filename: parserPath});
-const {CppCodeExecutor, validateCppSyntax} = context.exports;
+const {CppCodeExecutor, validateCppSyntax, createCppExecutor} = context.exports;
 const main = body => `int main() {\n${body}\n}`;
 // Complete program from the first email screenshot; the second repeats this issue.
 const customerEmailCode = `void test() {
@@ -44,15 +44,30 @@ async function run(code, expected, configure) {
     if (configure) configure(executor, context.window);
     const validation = await validateCppSyntax(code);
     assert.strictEqual(validation.isValid, true, JSON.stringify(validation.errors));
-    await executor.run();
+    const exitCode = await executor.run();
+    if (Object.prototype.hasOwnProperty.call(expected, 'exitCode')) assert.strictEqual(exitCode, expected.exitCode);
     if (expected.moves) assert.deepStrictEqual(moves, expected.moves);
     if (expected.turns) assert.deepStrictEqual(turns, expected.turns);
     assert.strictEqual(executor.variables, executor.globalVariables, 'scope must unwind after execution');
     assert.strictEqual(executor.callStack.length, 0);
+    assert.strictEqual(executor.currentExecutionContext, null);
+    assert.strictEqual(executor.isRunning, false);
     return executor;
 }
 
 const cases = [
+    ['screenshot: main return 1 is a normal exit', main('playerMove(4);\nreturn 1;'), {moves: [4], exitCode: 1}],
+    ['return 1 skips remaining main statements', main('return 1;\nplayerMove(9);'), {moves: [], exitCode: 1}],
+    ['return 0 also stops main early', main('return 0;\nplayerMove(9);'), {moves: [], exitCode: 0}],
+    ['negative exit code', main('return -1;'), {moves: [], exitCode: -1}],
+    ['parenthesized return expression', main('int status = 2;\nreturn (status + 1);'), {moves: [], exitCode: 3}],
+    ['main fallthrough returns zero', main('playerMove(1);'), {moves: [1], exitCode: 0}],
+    ['return from for loop exits main', main('for (int i = 0; i < 3; i++) {\nplayerMove(i);\nreturn 1;\n}\nplayerMove(9);'), {moves: [0], exitCode: 1}],
+    ['return zero inside loop is not ignored', main('for (int i = 0; i < 3; i++) {\nreturn 0;\n}\nplayerMove(9);'), {moves: [], exitCode: 0}],
+    ['return through while and if exits main', main('while (true) {\nif (true) {\nreturn 2;\n}\nplayerMove(9);\n}\nplayerMove(8);'), {moves: [], exitCode: 2}],
+    ['function return 0 skips only its own remaining statements', 'int f() {\nreturn 0;\nplayerMove(9);\n}\n' + main('f();\nplayerMove(1);\nreturn 1;'), {moves: [1], exitCode: 1}],
+    ['function return inside loop resumes caller', 'int f() {\nfor (int i = 0; i < 3; i++) {\nreturn 1;\n}\nplayerMove(9);\n}\n' + main('f();\nplayerMove(1);'), {moves: [1], exitCode: 0}],
+    ['identifier starting with return is not a return statement', main('int returnValue = 1;\nreturnValue = 2;\nplayerMove(returnValue);\nreturn 0;'), {moves: [2], exitCode: 0}],
     ['customer email complete program (screenshots 1 and 2)', customerEmailCode, {moves: [0], turns: [-1]}],
     ['nested loops', main('for (int i = 0; i < 2; i++) {\nfor (int i = 0; i < 2; i++) {\n}\nplayerMove(i);\n}'), {moves: [0, 1]}],
     ['loop initializer restores shadowed value', main('int i = 9;\nfor (int i = 0; i < 2; i++) {\n}\nplayerMove(i);'), {moves: [9]}],
@@ -104,5 +119,21 @@ const cases = [
         console.log(`PASS scope cleanup on ${stop ? 'stop' : 'error'}`);
     }
 
-    console.log(`${cases.length + 4} regression checks passed`);
+    const highlighted = [];
+    context.window = {isScriptRunOver: false, setHighlightedLine: line => highlighted.push(line)};
+    const manager = createCppExecutor();
+    for (const status of [1, 0]) {
+        assert.strictEqual(await manager.execute(main(`return ${status};`)), status);
+        assert.strictEqual(manager.currentExecutor, null);
+        assert.strictEqual(highlighted[highlighted.length - 1], null);
+    }
+    console.log('PASS editor executor manager resolves nonzero exit and can run again');
+
+    context.window.cppGameAPI = {playerMove: async () => {throw new Error('RETURN_INTERRUPT');}};
+    await assert.rejects(manager.execute('void f() {\nplayerMove(1);\n}\n' + main('f();')), /RETURN_INTERRUPT/);
+    assert.strictEqual(manager.currentExecutor, null);
+    assert.strictEqual(highlighted[highlighted.length - 1], null);
+    console.log('PASS real game errors are not mistaken for a return signal');
+
+    console.log(`${cases.length + 6} regression checks passed`);
 })().catch(error => {console.error(error); process.exitCode = 1;});
diff --git a/scratch-gui/src/components/stage-cpp/cpp-parser.js b/scratch-gui/src/components/stage-cpp/cpp-parser.js
index 9b10e683..22594d75 100644
--- a/scratch-gui/src/components/stage-cpp/cpp-parser.js
+++ b/scratch-gui/src/components/stage-cpp/cpp-parser.js
@@ -548,6 +548,14 @@ class CppVariableScope extends Map {
   }
 }
 
+// return 是跨越循环/条件块的控制信号，只在所属函数边界消费。
+// 使用独立类型，避免吞掉恰好带有相同消息的真实运行错误。
+class CppReturnSignal {
+  constructor(value) {
+    this.value = value;
+  }
+}
+
 export class CppCodeExecutor {
   constructor(code, setHighlightedLine) {
     this.code = code;
@@ -566,7 +574,7 @@ export class CppCodeExecutor {
     try {
       this.isRunning = true;
       this.parseCode();
-      await this.withVariableScope(() => this.executeMain(), this.globalVariables);
+      return await this.withVariableScope(() => this.executeMain(), this.globalVariables);
     } catch (error) {
       console.error('C++执行错误:', error);
       throw error;
@@ -814,12 +822,26 @@ export class CppCodeExecutor {
 
     while (i < lines.length) {
       const line = lines[i].trim();
-      if (!line || line.startsWith('//') || line === '{' || line === '}' || line === 'return 0;' || 
+      if (!line || line.startsWith('//') || line === '{' || line === '}' ||
           line.match(/^\s*}\s*else\s*\{\s*$/) || line.startsWith('else')) {
         i++;
         continue;
       }
 
+      // return 不能标记成 continue，否则循环会直接跳过它。
+      if (/^return\b/.test(line)) {
+        statements.push({
+          type: 'control',
+          subtype: 'return',
+          content: line,
+          lineNumber: isMainFunction ? this.getActualLineNumber(i) : i + 1,
+          originalContent: line,
+          contextPath: isMainFunction ? 'main' : 'function'
+        });
+        i++;
+        continue;
+      }
+
       // 检查是否是自定义函数调用（包括带括号的实参，如 f((n + 1));）
       const customCall = this.parseCustomFunctionCall(line);
       if (customCall) {
@@ -848,8 +870,8 @@ export class CppCodeExecutor {
         statements.push(whileLoop);
         i = whileLoop.endIndex;
       } else {
-        // 检查是否是break或continue或return语句
-        if (line === 'break;' || line === 'continue;' || line.startsWith('return')) {
+        // 检查是否是break或continue语句
+        if (line === 'break;' || line === 'continue;') {
           statements.push({
             type: 'control',
             subtype: line === 'break;' ? 'break' : 'continue',
@@ -1327,10 +1349,17 @@ export class CppCodeExecutor {
   }
 
   async executeMain() {
-    for (const statement of this.statements) {
-      if (this.shouldStop()) break;
-      await this.executeStatement(statement);
+    try {
+      for (const statement of this.statements) {
+        if (this.shouldStop()) break;
+        await this.executeStatement(statement);
+      }
+    } catch (signal) {
+      if (!(signal instanceof CppReturnSignal)) throw signal;
+      return signal.value;
     }
+    // main 正常执行到末尾，相当于 return 0。
+    return 0;
   }
 
   async executeStatement(statement) {
@@ -1361,8 +1390,11 @@ export class CppCodeExecutor {
         await this.executeFunctionCall(statement);
         break;
       case 'control':
-        if (statement.content.startsWith('return')) {
-          throw new Error('RETURN_INTERRUPT');
+        if (statement.subtype === 'return') {
+          const match = statement.content.match(/^return\b([\s\S]*?);(?:\s*\/\/.*)?$/);
+          if (!match) throw new Error(`无法解析return语句: ${statement.content}`);
+          const expression = match[1].trim();
+          throw new CppReturnSignal(expression ? this.evaluateExpression(expression) : undefined);
         }
         // break和continue在各自的循环中处理，这里只记录
         debugLog(`🔄 控制语句: ${statement.subtype}`);
@@ -1887,7 +1919,8 @@ export class CppCodeExecutor {
           await this.executeStatement(adjustedStatement);
         }
       } catch (e) {
-        if (e.message !== 'RETURN_INTERRUPT') throw e;
+        if (!(e instanceof CppReturnSignal)) throw e;
+        return e.value;
       }
       
       console.log(`✅ 函数${functionName}执行完成`);
@@ -2719,7 +2752,7 @@ export const createCppExecutor = () => {
       const executor = new CppCodeExecutor(code, window.setHighlightedLine);
       this.currentExecutor = executor;
       try {
-        await executor.run();
+        return await executor.run();
       } finally {
         this.currentExecutor = null;
       }
diff --git a/scratch-gui/src/playground/config.js b/scratch-gui/src/playground/config.js
index a41635c9..cc48a4da 100644
--- a/scratch-gui/src/playground/config.js
+++ b/scratch-gui/src/playground/config.js
@@ -1,12 +1,12 @@
 // config.js
 
 // const CONFIG = {
-//     DataServerBaseUrl: "https://service.001code.cn",  // 在这里定义服务器地址
-//     // DataServerBaseUrl: "https://service.001code.cn",  // 在这里定义服务器地址
-//     // DataServerBaseUrl: "https://service.001code.cn",
-//     // DataServerBaseUrl: "https://service.001code.cn",
-//     // DataServerBaseUrl: "https://service.001code.cn",
-//     // DataServerBaseUrl: "https://service.001code.cn",
+//     DataServerBaseUrl: "https://service.001code.com",  // 在这里定义服务器地址
+//     // DataServerBaseUrl: "https://service.001code.com",  // 在这里定义服务器地址
+//     // DataServerBaseUrl: "https://service.001code.com",
+//     // DataServerBaseUrl: "https://service.001code.com",
+//     // DataServerBaseUrl: "https://service.001code.com",
+//     // DataServerBaseUrl: "https://service.001code.com",
 //     version : "2025010301",
 //     unitycdndir : 'https://oss-rpwqy.jjwlcdn.com/001_code_unity_res_20250826',
 //     unitycdnbuilddir : 'https://oss-rpwqy.jjwlcdn.com/001_code_unity_res_20250826/Build',
@@ -78,12 +78,12 @@
 
 
 // const CONFIG = {
-//     // DataServerBaseUrl: "https://service.001code.cn",  // 在这里定义服务器地址
-//     // DataServerBaseUrl: "https://service.001code.cn",  // 在这里定义服务器地址
-//     // DataServerBaseUrl: "https://service.001code.cn",
-//     DataServerBaseUrl: "https://service.001code.cn",
-//     // DataServerBaseUrl: "https://service.001code.cn",
-//     // DataServerBaseUrl: "https://service.001code.cn",
+//     // DataServerBaseUrl: "https://service.001code.com",  // 在这里定义服务器地址
+//     // DataServerBaseUrl: "https://service.001code.com",  // 在这里定义服务器地址
+//     // DataServerBaseUrl: "https://service.001code.com",
+//     DataServerBaseUrl: "https://service.001code.com",
+//     // DataServerBaseUrl: "https://service.001code.com",
+//     // DataServerBaseUrl: "https://service.001code.com",
 //     version : "2025011001",
 //     unitycdndir : 'https://oss-rpwqy.jjwlcdn.com/001_code_unity_res_20250826',
 //     unitycdnbuilddir : 'https://oss-rpwqy.jjwlcdn.com/001_code_unity_res_20250826/Build',
@@ -157,12 +157,12 @@
 
 
 const CONFIG = {
-    // DataServerBaseUrl: "https://service.001code.cn",  // 在这里定义服务器地址
-    // DataServerBaseUrl: "https://service.001code.cn",  // 在这里定义服务器地址
-    // DataServerBaseUrl: "https://service.001code.cn",
-    DataServerBaseUrl: "https://service.001code.cn",
-    // DataServerBaseUrl: "https://service.001code.cn",
-    // DataServerBaseUrl: "https://service.001code.cn",
+    // DataServerBaseUrl: "https://service.001code.com",  // 在这里定义服务器地址
+    // DataServerBaseUrl: "https://service.001code.com",  // 在这里定义服务器地址
+    // DataServerBaseUrl: "https://service.001code.com",
+    DataServerBaseUrl: "https://service.001code.com",
+    // DataServerBaseUrl: "https://service.001code.com",
+    // DataServerBaseUrl: "https://service.001code.com",
 
     version: "2026071701",
     /** OSS 真实地址（生产环境浏览器直连） */