diff --git a/packages/core/src/agent/executor.ts b/packages/core/src/agent/executor.ts
index 706eeec..42cfbe0 100644
--- a/packages/core/src/agent/executor.ts
+++ b/packages/core/src/agent/executor.ts
@@ -16,7 +16,7 @@ import type {
   ImageData,
 } from './types.js';
 import { checkBashPermission, isPathInAllowedWritePaths } from './permission-merger.js';
-import { getProviderRegistry } from '../provider/index.js';
+import { getProviderRegistry, resolveApiKey } from '../provider/index.js';
 import { renderPromptTemplate, createPlanContext } from '../template/index.js';
 import { agentEventEmitter } from './events.js';
 
@@ -42,10 +42,20 @@ export class AgentExecutor {
     // 使用 ProviderRegistry 获取模型工厂
     const provider = agentInfo.model?.provider ?? baseConfig.provider;
     const registry = getProviderRegistry();
-    this.getModel = registry.getModelFactory(provider, {
-      apiKey: baseConfig.apiKey,
-      baseUrl: baseConfig.baseUrl,
-    });
+
+    // 当 Agent 指定了不同的 provider 时，需要从 ProviderRegistry 获取对应的配置
+    // 而不是使用 baseConfig（主 Agent 配置）的 apiKey 和 baseUrl
+    let apiKey = baseConfig.apiKey;
+    let baseUrl = baseConfig.baseUrl;
+
+    if (agentInfo.model?.provider && agentInfo.model.provider !== baseConfig.provider) {
+      // Agent 使用了不同的 provider，获取对应 provider 的配置
+      const providerConfig = registry.getConfig(provider);
+      apiKey = resolveApiKey(providerConfig) || baseConfig.apiKey;
+      baseUrl = providerConfig?.baseUrl;
+    }
+
+    this.getModel = registry.getModelFactory(provider, { apiKey, baseUrl });
   }
 
   /**
diff --git a/packages/core/tests/unit/agent/executor-extended.test.ts b/packages/core/tests/unit/agent/executor-extended.test.ts
index 9b6cc4d..4d08cb9 100644
--- a/packages/core/tests/unit/agent/executor-extended.test.ts
+++ b/packages/core/tests/unit/agent/executor-extended.test.ts
@@ -37,10 +37,13 @@ vi.mock('../../../src/agent/permission-merger.js', () => ({
 
 // Mock provider registry
 const mockGetModelFactory = vi.fn();
+const mockGetConfig = vi.fn();
 vi.mock('../../../src/provider/index.js', () => ({
   getProviderRegistry: () => ({
     getModelFactory: (...args: unknown[]) => mockGetModelFactory(...args),
+    getConfig: (...args: unknown[]) => mockGetConfig(...args),
   }),
+  resolveApiKey: (config: { apiKey?: string } | undefined) => config?.apiKey,
 }));
 
 import { AgentExecutor } from '../../../src/agent/executor.js';
@@ -113,6 +116,50 @@ describe('AgentExecutor - Agent 执行器扩展测试', () => {
 
       expect(mockGetModelFactory).toHaveBeenCalledWith('openai', expect.any(Object));
     });
+
+    it('当 Agent 使用不同 provider 时，获取对应 provider 的配置', () => {
+      // 设置 openai provider 的配置
+      mockGetConfig.mockReturnValue({
+        apiKey: 'openai-api-key',
+        baseUrl: 'https://api.openai.com/v1',
+      });
+
+      const agentWithDifferentProvider: AgentInfo = {
+        ...basicAgentInfo,
+        model: { provider: 'openai', model: 'gpt-4' },
+      };
+
+      new AgentExecutor(agentWithDifferentProvider, baseConfig, mockToolRegistry as any);
+
+      // 应该调用 getConfig 获取 openai 的配置
+      expect(mockGetConfig).toHaveBeenCalledWith('openai');
+
+      // 应该使用 openai 的配置，而不是 baseConfig 的
+      expect(mockGetModelFactory).toHaveBeenCalledWith('openai', {
+        apiKey: 'openai-api-key',
+        baseUrl: 'https://api.openai.com/v1',
+      });
+    });
+
+    it('当 Agent 使用相同 provider 时，使用 baseConfig 的配置', () => {
+      mockGetConfig.mockClear();
+
+      const agentWithSameProvider: AgentInfo = {
+        ...basicAgentInfo,
+        model: { provider: 'anthropic', model: 'claude-opus' },
+      };
+
+      new AgentExecutor(agentWithSameProvider, baseConfig, mockToolRegistry as any);
+
+      // 不应该调用 getConfig，因为 provider 相同
+      expect(mockGetConfig).not.toHaveBeenCalled();
+
+      // 应该使用 baseConfig 的配置
+      expect(mockGetModelFactory).toHaveBeenCalledWith('anthropic', {
+        apiKey: 'test-key',
+        baseUrl: undefined,
+      });
+    });
   });
 
   describe('execute - 执行任务', () => {