diff --git a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/LoadingManageServiceImpl.java b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/LoadingManageServiceImpl.java
index 63a9cbf4..41dd279c 100644
--- a/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/LoadingManageServiceImpl.java
+++ b/blade-service/blade-transport/src/main/java/org/springblade/transport/service/impl/LoadingManageServiceImpl.java
@@ -952,6 +952,10 @@ public class LoadingManageServiceImpl extends BaseServiceImpl<LoadingManageMappe
 			return;
 		}
 		List<ContractManage> contracts = availableCarrierContracts(projectIdsOf(waybills));
+		// 项目下没有任何可用承运商合同时不存在乙方交集约束；承运类型为「承运商」由 validateCarrierContract 要求选择合同
+		if (Func.isEmpty(contracts)) {
+			return;
+		}
 		Set<String> allowedPartyBs = intersectCarrierPartyBs(waybills, contracts);
 		if (allowedPartyBs.isEmpty()) {
 			throw new ServiceException("所选运单在同一项目下没有共同的承运商合同乙方，不能配载到同一配载单");
@@ -1071,7 +1075,9 @@ public class LoadingManageServiceImpl extends BaseServiceImpl<LoadingManageMappe
 		if (waybill == null || Func.isEmpty(projectContracts)) {
 			return Set.of();
 		}
-		String partyA = customerPartyAMap.get(waybill.getContractId());
+		Long contractId = waybill.getContractId();
+		// 运单没有客户合同时不按甲方过滤，取空串而不是去空表里取 null 键
+		String partyA = contractId == null ? "" : customerPartyAMap.get(contractId);
 		return projectContracts.stream()
 			.filter(contract -> Objects.equals(contract.getProjectId(), waybill.getProjectId()))
 			.filter(contract -> Func.isEmpty(partyA) || Objects.equals(normalizePartyName(contract.getPartyA()), partyA))
diff --git a/blade-service/blade-transport/src/test/java/org/springblade/transport/CustomerArchiveSyncKingdeeDataTest.java b/blade-service/blade-transport/src/test/java/org/springblade/transport/CustomerArchiveSyncKingdeeDataTest.java
index f06cbcc8..b05844f1 100644
--- a/blade-service/blade-transport/src/test/java/org/springblade/transport/CustomerArchiveSyncKingdeeDataTest.java
+++ b/blade-service/blade-transport/src/test/java/org/springblade/transport/CustomerArchiveSyncKingdeeDataTest.java
@@ -40,7 +40,9 @@ import org.springframework.boot.test.context.SpringBootTest;
  */
 @SpringBootTest(classes = TransportApplication.class, properties = {
 	"spring.profiles.active=dev",
-	"spring.main.allow-bean-definition-overriding=true"
+	"spring.main.allow-bean-definition-overriding=true",
+	// HCS 是可选外部集成，本地 Nacos 未配置该地址时 Feign 客户端会让整个上下文起不来；本测试不调用 HCS
+	"thirdParty.hcs.baseUrl=http://localhost:9"
 })
 class CustomerArchiveSyncKingdeeDataTest {
 
diff --git a/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/LoadingManageAdmissionTest.java b/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/LoadingManageAdmissionTest.java
index b71ce064..f3bbe693 100644
--- a/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/LoadingManageAdmissionTest.java
+++ b/blade-service/blade-transport/src/test/java/org/springblade/transport/service/impl/LoadingManageAdmissionTest.java
@@ -294,6 +294,33 @@ class LoadingManageAdmissionTest {
 		assertEquals("所选承运商合同不存在、未审核通过或已失效", exception.getMessage());
 	}
 
+	@Test
+	@DisplayName("子运单的客户合同快照为空时不按甲方过滤，取不到甲方也不空指针")
+	void missingCustomerContractDoesNotFilterByPartyA() {
+		Waybill withSnapshot = waybill(1L, WAYBILL_NO_A, "road", "pending", null, PROJECT_A);
+		withSnapshot.setContractId(OTHER_CONTRACT_ID);
+		stubWaybills(withSnapshot, waybill(2L, WAYBILL_NO_B, "road", "pending", null, PROJECT_A));
+		stubContract(CONTRACT_ID, PROJECT_A);
+
+		assertDoesNotThrow(() -> service.submit(submitPayload(List.of(1L, 2L))));
+	}
+
+	@Test
+	@DisplayName("项目下没有可用承运商合同时不按乙方交集拦截：自运的多张子运单照常提交")
+	void noAvailableCarrierContractSkipsPartyBCheck() {
+		stubWaybills(
+			waybill(1L, WAYBILL_NO_A, "road", "pending", null, PROJECT_A),
+			waybill(2L, WAYBILL_NO_B, "road", "pending", null, PROJECT_A));
+		when(contractManageService.list(anyContractWrapper())).thenReturn(List.of());
+		LoadingManage payload = submitPayload(List.of(1L, 2L));
+		payload.setCarrierType("自运");
+		payload.setCarrierContractId(null);
+		payload.setDriverName("张三");
+		payload.setDriverPhone("13800008000");
+
+		assertDoesNotThrow(() -> service.submit(payload));
+	}
+
 	// ------------------------------------------------------------ 放行
 
 	@Test