diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/DriverServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/DriverServiceImpl.java
index 41964813..b63581a4 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/DriverServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/DriverServiceImpl.java
@@ -383,9 +383,6 @@ public class DriverServiceImpl extends BaseServiceImpl<DriverMapper, Driver> imp
 		if (Func.isEmpty(driver.getMobile())) {
 			throw new ServiceException("手机号不能为空");
 		}
-		if (Func.isEmpty(driver.getOrganizationName())) {
-			throw new ServiceException("所属组织不能为空");
-		}
 		if (Func.isEmpty(driver.getEmergencyContactName())) {
 			throw new ServiceException("紧急联系人姓名不能为空");
 		}
@@ -475,7 +472,10 @@ public class DriverServiceImpl extends BaseServiceImpl<DriverMapper, Driver> imp
 			}
 		}
 
-		// 部门可选：匹配到则写入小程序用户，匹配不到不阻断同步
+		// 按「组织名称」反查组织树 id：组织改名后这里必然落空——不报错、不掉数据，
+		// 只是该司机账号的权限不再随组织变化（新建账号落空时数据权限为空集，管理端看不到）。
+		// 组织为空同样落空，此时 deptId 传 null 而不是空串：updateUser 的 updateById 忽略 null，
+		// 账号原有的组织与数据权限得以保留；写成空串会把它们覆盖掉。
 		String deptId = null;
 		R<String> deptResult = sysClient.getDeptIds(tenantId, driver.getOrganizationName());
 		if (deptResult != null && R.isSuccess(deptResult) && Func.isNotEmpty(deptResult.getData())) {
diff --git a/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/DriverServiceImplTest.java b/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/DriverServiceImplTest.java
index 878fa815..f520381a 100644
--- a/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/DriverServiceImplTest.java
+++ b/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/DriverServiceImplTest.java
@@ -23,6 +23,7 @@ import java.time.LocalDate;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.ArgumentMatchers.any;
@@ -141,9 +142,60 @@ class DriverServiceImplTest {
 		verify(driverMapper, never()).updateById(any(Driver.class));
 	}
 
+	// ------------------------------------------------------------ 无组织司机
+
+	@Test
+	@DisplayName("保存司机：组织为空也能保存（自助注册的档案在管理端不能再是只读的）")
+	void submitAllowsEmptyOrganization() {
+		Driver driver = driver(PLATE, "");
+		when(driverMapper.selectByIdIncludingDeleted(DRIVER_ID)).thenReturn(driver);
+		when(driverMapper.selectByIdCardNoIncludingDeleted(driver.getIdCardNo())).thenReturn(null);
+		when(driverMapper.selectById(DRIVER_ID)).thenReturn(driver);
+		when(driverMapper.updateById(any(Driver.class))).thenReturn(1);
+		MpUser existing = new MpUser();
+		existing.setId(USER_ID);
+		when(mpUserClient.userByPhone(TENANT_ID, MOBILE)).thenReturn(R.data(existing));
+		when(mpUserClient.updateUser(any(MpUser.class))).thenReturn(R.data(true));
+
+		try (MockedStatic<AuthUtil> authUtil = mockStatic(AuthUtil.class)) {
+			authUtil.when(AuthUtil::getTenantId).thenReturn(TENANT_ID);
+			assertTrue(service.submit(driver));
+		}
+		assertEquals("", driver.getOrganizationName(), "无组织按空串落库，不是 NULL");
+	}
+
+	@Test
+	@DisplayName("保存司机：组织为空时不得把账号原有 dept_id 写成空串，deptId 只能留 null 交给更新忽略")
+	void submitWithEmptyOrganizationKeepsMpUserDeptId() {
+		Driver driver = driver(PLATE, "");
+		when(driverMapper.selectByIdIncludingDeleted(DRIVER_ID)).thenReturn(driver);
+		when(driverMapper.selectByIdCardNoIncludingDeleted(driver.getIdCardNo())).thenReturn(null);
+		when(driverMapper.selectById(DRIVER_ID)).thenReturn(driver);
+		when(driverMapper.updateById(any(Driver.class))).thenReturn(1);
+		MpUser existing = new MpUser();
+		existing.setId(USER_ID);
+		existing.setDeptId("1123598821738675201");
+		when(mpUserClient.userByPhone(TENANT_ID, MOBILE)).thenReturn(R.data(existing));
+		when(mpUserClient.updateUser(any(MpUser.class))).thenReturn(R.data(true));
+
+		try (MockedStatic<AuthUtil> authUtil = mockStatic(AuthUtil.class)) {
+			authUtil.when(AuthUtil::getTenantId).thenReturn(TENANT_ID);
+			service.submit(driver);
+		}
+
+		ArgumentCaptor<MpUser> captor = ArgumentCaptor.forClass(MpUser.class);
+		verify(mpUserClient).updateUser(captor.capture());
+		assertNull(captor.getValue().getDeptId(),
+			"名称反查落空时 deptId 传 null；写成空串会把账号原有组织与数据权限覆盖掉");
+	}
+
 	// ------------------------------------------------------------ 夹具
 
 	private Driver driver(String drivingVehicle) {
+		return driver(drivingVehicle, "测试组织");
+	}
+
+	private Driver driver(String drivingVehicle, String organizationName) {
 		Driver driver = new Driver();
 		driver.setId(DRIVER_ID);
 		driver.setIsDeleted(0);
@@ -160,7 +212,7 @@ class DriverServiceImplTest {
 		driver.setQualificationLongTerm(1);
 		driver.setDriverType("自有");
 		driver.setMobile(MOBILE);
-		driver.setOrganizationName("测试组织");
+		driver.setOrganizationName(organizationName);
 		driver.setEmergencyContactName("李四");
 		driver.setEmergencyContactMobile("13800000000");
 		driver.setIdCardFront("https://oss/id-front.jpg");