diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/WxCpTpUserService.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/WxCpTpUserService.java
index 0f2fc5dd9..1359fa66e 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/WxCpTpUserService.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/WxCpTpUserService.java
@@ -53,9 +53,29 @@ public interface WxCpTpUserService {
    * @param departId   必填。部门id
    * @param fetchChild 非必填。1/0：是否递归获取子部门下面的成员
    * @param status     非必填。0获取全部员工，1获取已关注成员列表，2获取禁用成员列表，4获取未关注成员列表。status可叠加
+   * @param corpId     企业id
    * @return the list
    * @throws WxErrorException the wx error exception
    */
+  List<WxCpUser> listSimpleByDepartment(Long departId, Boolean fetchChild, Integer status, String corpId)
+    throws WxErrorException;
+
+  /**
+   * <pre>
+   * 获取部门成员.
+   *
+   * http://qydev.weixin.qq.com/wiki/index.php?title=管理成员#.E8.8E.B7.E5.8F.96.E9.83.A8.E9.97.A8.E6.88.90.E5.91.98
+   * </pre>
+   *
+   * @param departId   必填。部门id
+   * @param fetchChild 非必填。1/0：是否递归获取子部门下面的成员
+   * @param status     非必填。0获取全部员工，1获取已关注成员列表，2获取禁用成员列表，4获取未关注成员列表。status可叠加
+   * @return the list
+   * @throws WxErrorException the wx error exception
+   * @deprecated 第三方应用调用此接口需要使用 corpId 对应的 access_token，请使用
+   *     {@link #listSimpleByDepartment(Long, Boolean, Integer, String)}
+   */
+  @Deprecated
   List<WxCpUser> listSimpleByDepartment(Long departId, Boolean fetchChild, Integer status) throws WxErrorException;
 
   /**
diff --git a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/impl/WxCpTpUserServiceImpl.java b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/impl/WxCpTpUserServiceImpl.java
index d99262746..f3d41e3ff 100644
--- a/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/impl/WxCpTpUserServiceImpl.java
+++ b/weixin-java-cp/src/main/java/me/chanjar/weixin/cp/tp/service/impl/WxCpTpUserServiceImpl.java
@@ -97,6 +97,42 @@ public List<WxCpUser> listByDepartment(Long departId, Boolean fetchChild, Intege
   }
 
   @Override
+  public List<WxCpUser> listSimpleByDepartment(Long departId, Boolean fetchChild, Integer status, String corpId)
+    throws WxErrorException {
+    StringBuilder params = new StringBuilder();
+    if (fetchChild != null) {
+      params.append("fetch_child=").append(fetchChild ? "1" : "0");
+    }
+    if (status != null) {
+      if (params.length() > 0) {
+        params.append('&');
+      }
+      params.append("status=").append(status);
+    } else {
+      if (params.length() > 0) {
+        params.append('&');
+      }
+      params.append("status=0");
+    }
+    if (params.length() > 0) {
+      params.append('&');
+    }
+    params.append("access_token=")
+      .append(mainService.getWxCpTpConfigStorage().getAccessToken(corpId));
+
+    String url = mainService.getWxCpTpConfigStorage().getApiUrl(USER_SIMPLE_LIST + departId);
+    String responseContent = this.mainService.get(url, params.toString(), true);
+    JsonObject tmpJsonElement = GsonParser.parse(responseContent);
+    return WxCpGsonBuilder.create()
+      .fromJson(
+        tmpJsonElement.getAsJsonObject().get("userlist"),
+        new TypeToken<List<WxCpUser>>() {
+        }.getType()
+      );
+  }
+
+  @Override
+  @Deprecated
   public List<WxCpUser> listSimpleByDepartment(Long departId, Boolean fetchChild, Integer status)
     throws WxErrorException {
     String params = "";
diff --git a/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/tp/service/impl/WxCpTpUserServiceImplTest.java b/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/tp/service/impl/WxCpTpUserServiceImplTest.java
new file mode 100644
index 000000000..1cfc7f349
--- /dev/null
+++ b/weixin-java-cp/src/test/java/me/chanjar/weixin/cp/tp/service/impl/WxCpTpUserServiceImplTest.java
@@ -0,0 +1,85 @@
+package me.chanjar.weixin.cp.tp.service.impl;
+
+import me.chanjar.weixin.common.error.WxErrorException;
+import me.chanjar.weixin.cp.bean.WxCpUser;
+import me.chanjar.weixin.cp.config.WxCpTpConfigStorage;
+import me.chanjar.weixin.cp.config.impl.WxCpTpDefaultConfigImpl;
+import me.chanjar.weixin.cp.tp.service.WxCpTpUserService;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.testng.annotations.AfterClass;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+
+import java.util.List;
+
+import static me.chanjar.weixin.cp.constant.WxCpApiPathConsts.User.USER_SIMPLE_LIST;
+import static org.mockito.ArgumentMatchers.contains;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.testng.Assert.assertNotNull;
+
+/**
+ * 企业微信-第三方开发-用户管理相关测试.
+ *
+ * @author GitHub Copilot
+ */
+public class WxCpTpUserServiceImplTest {
+
+  @Mock
+  private WxCpTpServiceApacheHttpClientImpl wxCpTpService;
+
+  @Mock
+  private WxCpTpConfigStorage configStorage;
+
+  private WxCpTpUserService wxCpTpUserService;
+
+  private AutoCloseable mockitoAnnotations;
+
+  /**
+   * Sets up.
+   */
+  @BeforeClass
+  public void setUp() {
+    mockitoAnnotations = MockitoAnnotations.openMocks(this);
+    when(wxCpTpService.getWxCpTpConfigStorage()).thenReturn(configStorage);
+    WxCpTpDefaultConfigImpl defaultConfig = new WxCpTpDefaultConfigImpl();
+    when(configStorage.getApiUrl(contains(USER_SIMPLE_LIST)))
+      .thenAnswer(invocation -> defaultConfig.getApiUrl(invocation.getArgument(0)));
+    wxCpTpUserService = new WxCpTpUserServiceImpl(wxCpTpService);
+  }
+
+  /**
+   * Tear down.
+   *
+   * @throws Exception the exception
+   */
+  @AfterClass
+  public void tearDown() throws Exception {
+    mockitoAnnotations.close();
+  }
+
+  /**
+   * 测试使用 corpId 的 listSimpleByDepartment 方法，验证请求使用了 access_token 而非 suite_access_token.
+   *
+   * @throws WxErrorException the wx error exception
+   */
+  @Test
+  public void testListSimpleByDepartmentWithCorpId() throws WxErrorException {
+    Long departId = 1L;
+    String corpId = "test_corp_id";
+    String accessToken = "test_access_token";
+    String result = "{\"errcode\":0,\"errmsg\":\"ok\",\"userlist\":[{\"userid\":\"zhangsan\",\"name\":\"张三\"}]}";
+
+    when(configStorage.getAccessToken(corpId)).thenReturn(accessToken);
+    String url = new WxCpTpDefaultConfigImpl().getApiUrl(USER_SIMPLE_LIST + departId);
+    when(wxCpTpService.get(eq(url), contains("access_token=" + accessToken), eq(true))).thenReturn(result);
+
+    List<WxCpUser> users = wxCpTpUserService.listSimpleByDepartment(departId, true, 0, corpId);
+    assertNotNull(users);
+
+    // 验证调用时传入了 withoutSuiteAccessToken=true，确保不会附加 suite_access_token
+    verify(wxCpTpService).get(eq(url), contains("access_token=" + accessToken), eq(true));
+  }
+}