diff --git a/zt-module-contract-order/zt-module-contract-order-api/src/main/java/com/zt/plat/module/contractorder/enums/TableFieldConstants.java b/zt-module-contract-order/zt-module-contract-order-api/src/main/java/com/zt/plat/module/contractorder/enums/TableFieldConstants.java
index 1a520bb..dbb03e3 100644
--- a/zt-module-contract-order/zt-module-contract-order-api/src/main/java/com/zt/plat/module/contractorder/enums/TableFieldConstants.java
+++ b/zt-module-contract-order/zt-module-contract-order-api/src/main/java/com/zt/plat/module/contractorder/enums/TableFieldConstants.java
@@ -137,4 +137,10 @@ public class TableFieldConstants {
     /* 实例条款值表 */
     // 关联实例主键
     public static final String BSE_TMPL_INSC_ITM_INSC_ID = "INSC_ID";
+
+    /* 业务关联表 */
+    // 上游主键
+    public static final String BSE_SYS_REL_UP_ID = "UP_ID";
+    // 下游主键
+    public static final String BSE_SYS_REL_DOWN_ID = "DOWN_ID";
 }
diff --git a/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/controller/admin/contract/ContractController.java b/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/controller/admin/contract/ContractController.java
index 3f55ecb..bc35f93 100644
--- a/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/controller/admin/contract/ContractController.java
+++ b/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/controller/admin/contract/ContractController.java
@@ -161,4 +161,18 @@ public class ContractController implements BusinessControllerMarker {
     public CommonResult<List<ContractRespVO>> getListNotRelation(@RequestParam("id") Long id) {
         return success(contractService.getListNotRelation(id));
     }
+
+    @GetMapping("/get/up-relation")
+    @Operation(summary = "获得上游关联的合同数据")
+    @PreAuthorize("@ss.hasPermission('base:contract:get')")
+    public CommonResult<ContractRespVO> getUpRelation(@RequestParam("id") Long id) {
+        return success(contractService.getUpRelation(id));
+    }
+
+    @GetMapping("/get/down-relation")
+    @Operation(summary = "获得下游关联的合同数据")
+    @PreAuthorize("@ss.hasPermission('base:contract:get')")
+    public CommonResult<ContractRespVO> getDownRelation(@RequestParam("id") Long id) {
+        return success(contractService.getDownRelation(id));
+    }
 }
diff --git a/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractService.java b/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractService.java
index 5cf55d5..8d4aa19 100644
--- a/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractService.java
+++ b/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractService.java
@@ -121,4 +121,8 @@ public interface ContractService {
     ContractRespVO getBySystemContractNumber(String systemContractNumber);
 
     List<ContractRespVO> getListNotRelation(Long id);
+
+    ContractRespVO getUpRelation(Long id);
+
+    ContractRespVO getDownRelation(Long id);
 }
diff --git a/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractServiceImpl.java b/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractServiceImpl.java
index 1064090..a4ab02d 100644
--- a/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractServiceImpl.java
+++ b/zt-module-contract-order/zt-module-contract-order-server/src/main/java/com/zt/plat/module/contractorder/service/contract/ContractServiceImpl.java
@@ -527,6 +527,48 @@ public class ContractServiceImpl implements ContractService {
         return result;
     }
 
+    @Override
+    public ContractRespVO getUpRelation(Long id) {
+
+        // 查询关联表
+        SystemRelativityDO systemRelativityDO = systemRelativityMapper.selectOne(TableFieldConstants.BSE_SYS_REL_DOWN_ID, id);
+        if (systemRelativityDO == null) {
+            return null;
+        }
+
+        // 上游合同ID
+        Long upId = systemRelativityDO.getUpId();
+
+        // 获取上游合同信息
+        ContractMainDO contractMainDO = contractMainMapper.selectById(upId);
+        if (contractMainDO == null) {
+            throw exception(CONTRACT_NOT_EXISTS);
+        }
+
+        return BeanUtils.toBean(contractMainDO, ContractRespVO.class);
+    }
+
+    @Override
+    public ContractRespVO getDownRelation(Long id) {
+
+        // 查询关联表
+        SystemRelativityDO systemRelativityDO = systemRelativityMapper.selectOne(TableFieldConstants.BSE_SYS_REL_UP_ID, id);
+        if (systemRelativityDO == null) {
+            return null;
+        }
+
+        // 下游合同ID
+        Long upId = systemRelativityDO.getUpId();
+
+        // 获取下游合同信息
+        ContractMainDO contractMainDO = contractMainMapper.selectById(upId);
+        if (contractMainDO == null) {
+            throw exception(CONTRACT_NOT_EXISTS);
+        }
+
+        return BeanUtils.toBean(contractMainDO, ContractRespVO.class);
+    }
+
     @Transactional
     @Override
     public Boolean update(ContractSaveReqVO reqVO) {