diff --git a/src/main/java/com/nbport/zgwl/contractlaunch/controller/ContractLaunchController.java b/src/main/java/com/nbport/zgwl/contractlaunch/controller/ContractLaunchController.java
index 7cb2f95..2cca4ed 100644
--- a/src/main/java/com/nbport/zgwl/contractlaunch/controller/ContractLaunchController.java
+++ b/src/main/java/com/nbport/zgwl/contractlaunch/controller/ContractLaunchController.java
@@ -337,17 +337,21 @@ public class ContractLaunchController {
     /**
      * 相对方确认已签署完成。
      *
-     * 请求体：{"companyName": "四川德鑫矿业资源有限公司"}
+     * 请求体：{"partyId": 123}
      * 后端自动获取当前登录用户信息写入确认记录。
      */
     @PostMapping("/{id}/counterparty-confirm")
     public R<Map<String, Object>> confirmCounterparty(@PathVariable("id") Long id,
                                                        @RequestBody Map<String, String> body) {
-        String companyName = body.get("companyName");
-        if (companyName == null || companyName.isBlank()) {
-            return R.error("companyName 不能为空");
+        String partyIdValue = body.get("partyId");
+        if (partyIdValue == null || partyIdValue.isBlank()) {
+            return R.error("partyId 不能为空");
+        }
+        try {
+            return R.success(contractLaunchService.confirmCounterparty(id, Long.valueOf(partyIdValue)));
+        } catch (NumberFormatException ex) {
+            return R.error("partyId 格式不正确");
         }
-        return R.success(contractLaunchService.confirmCounterparty(id, companyName));
     }
 
     /**
diff --git a/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchService.java b/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchService.java
index 4da2500..e65ce6c 100644
--- a/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchService.java
+++ b/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchService.java
@@ -63,7 +63,7 @@ public interface ContractLaunchService {
     Map<String, Object> getCounterpartyConfirmFiltered(Long id);
 
     /** 相对方确认已签署完成 */
-    Map<String, Object> confirmCounterparty(Long id, String companyName);
+    Map<String, Object> confirmCounterparty(Long id, Long partyId);
 
     /** 模拟合同采集（调用数据采集 collectContract 接口，TODO：替换为真实调用） */
     ContractLaunchDto mockCollect(Long id);
diff --git a/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchServiceImpl.java b/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchServiceImpl.java
index da72ce9..32ffd57 100644
--- a/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchServiceImpl.java
+++ b/src/main/java/com/nbport/zgwl/contractlaunch/service/ContractLaunchServiceImpl.java
@@ -612,58 +612,61 @@ public class ContractLaunchServiceImpl implements ContractLaunchService {
 
     @Override
     public Map<String, Object> getCounterpartyConfirmFiltered(Long id) {
-        Map<String, Object> all = getCounterpartyConfirmMap(id);
         SysUserEntity currentUser = adminSecurityManage.getUser();
         boolean canManageAll = authManager.isUserCanAccessSys(currentUser.getId(), SysEnum.MANAGE);
-        if (canManageAll) {
-            return all;
-        }
-        // business 用户只返回自己组织对应的相对方确认状态
         ContractLaunchDto contract = getDetail(id);
+        Map<String, Object> all = getCounterpartyConfirmMap(id);
+        List<Map<String, Object>> items = new ArrayList<>();
         String userOrgId = currentUser.getSysOrgEntity() == null ? "" : String.valueOf(currentUser.getSysOrgEntity().getId());
-        String userOrgName = currentUser.getSysOrgEntity() == null ? "" : currentUser.getSysOrgEntity().getOrgName();
-        Map<String, Object> filtered = new LinkedHashMap<>();
         if (contract.getPartyList() != null) {
             contract.getPartyList().stream()
                     .filter(this::isOppositeParty)
-                    .filter(p -> userOrgId.equals(p.getOppositeId())
-                            || userOrgId.equals(p.getSubjectCode())
-                            || userOrgName.equals(p.getCompanyName()))
-                    .forEach(p -> {
-                        String name = p.getCompanyName();
-                        filtered.put(name, all.getOrDefault(name, new LinkedHashMap<>()));
-                    });
+                    .filter(p -> canManageAll || userOrgId.equals(trim(p.getSubjectCode())))
+                    .forEach(p -> items.add(buildCounterpartyConfirmViewItem(p, all)));
         }
-        return filtered;
+        Map<String, Object> result = new LinkedHashMap<>();
+        result.put("items", items);
+        return result;
     }
 
     @Override
     @Transactional(rollbackFor = Exception.class)
-    public Map<String, Object> confirmCounterparty(Long id, String companyName) {
+    public Map<String, Object> confirmCounterparty(Long id, Long partyId) {
         ContractLaunchDto contract = getDetail(id);
         SysUserEntity currentUser = adminSecurityManage.getUser();
-        String orgName = currentUser.getSysOrgEntity() == null ? "" : currentUser.getSysOrgEntity().getOrgName();
+        String userOrgId = currentUser.getSysOrgEntity() == null ? "" : String.valueOf(currentUser.getSysOrgEntity().getId());
         String username = currentUser.getUsername();
         String mobile = currentUser.getMobilePhone();
+        if (partyId == null) {
+            throw new ServiceException("partyId 不能为空");
+        }
+
+        ContractLaunchPartyDto targetParty = contract.getPartyList() == null ? null : contract.getPartyList().stream()
+                .filter(this::isOppositeParty)
+                .filter(p -> Objects.equals(p.getId(), partyId))
+                .findFirst()
+                .orElse(null);
+        if (targetParty == null) {
+            throw new ServiceException("相对方不存在");
+        }
 
         // 权限校验：business 用户只能确认自己组织对应的相对方
         boolean canManageAll = authManager.isUserCanAccessSys(currentUser.getId(), SysEnum.MANAGE);
         if (!canManageAll) {
-            String userOrgId = currentUser.getSysOrgEntity() == null ? "" : String.valueOf(currentUser.getSysOrgEntity().getId());
-            boolean matched = (contract.getPartyList() != null) && contract.getPartyList().stream()
-                    .filter(this::isOppositeParty)
-                    .anyMatch(p -> companyName.equals(p.getCompanyName())
-                            && (userOrgId.equals(p.getOppositeId()) || userOrgId.equals(p.getSubjectCode())));
-            if (!matched) {
+            if (!userOrgId.equals(trim(targetParty.getSubjectCode()))) {
                 throw new ServiceException("只能确认本组织对应的相对方");
             }
         }
 
         Map<String, Object> confirmMap = getCounterpartyConfirmMap(id);
-
+        String confirmKey = buildCounterpartyConfirmKey(targetParty);
         Map<String, Object> entry = new LinkedHashMap<>();
         entry.put("confirmed", true);
-        boolean isSelf = companyName.equals(orgName);
+        entry.put("partyId", targetParty.getId());
+        entry.put("partnerId", targetParty.getPartnerId());
+        entry.put("companyName", targetParty.getCompanyName());
+        entry.put("subjectCode", targetParty.getSubjectCode());
+        boolean isSelf = userOrgId.equals(trim(targetParty.getSubjectCode()));
         entry.put("method", isSelf ? "self" : "manual");
         entry.put("confirmedBy", username);
         entry.put("confirmedMobile", mobile);
@@ -671,13 +674,13 @@ public class ContractLaunchServiceImpl implements ContractLaunchService {
         if (!isSelf) {
             entry.put("remark", "非本组织相对方，由 " + username + " 代为确认");
         }
-        confirmMap.put(companyName, entry);
+        confirmMap.put(confirmKey, entry);
 
         contract.setCounterpartyConfirmJson(JsonUtils.toJson(confirmMap));
         contract.setUpdateBy(username);
         contract.setUpdateTime(LocalDateTime.now());
         contractLaunchMapper.updateContract(contract);
-        return confirmMap;
+        return getCounterpartyConfirmFiltered(id);
     }
 
     /**
@@ -2176,6 +2179,29 @@ public class ContractLaunchServiceImpl implements ContractLaunchService {
         return value == null ? null : value.trim();
     }
 
+    private String buildCounterpartyConfirmKey(ContractLaunchPartyDto party) {
+        if (party == null || party.getId() == null) {
+            return "";
+        }
+        return "party_" + party.getId();
+    }
+
+    private Map<String, Object> buildCounterpartyConfirmViewItem(ContractLaunchPartyDto party, Map<String, Object> allConfirmMap) {
+        Map<String, Object> item = new LinkedHashMap<>();
+        item.put("partyId", party.getId());
+        item.put("partnerId", party.getPartnerId());
+        item.put("companyName", party.getCompanyName());
+        item.put("subjectCode", party.getSubjectCode());
+        item.put("oppositeId", party.getOppositeId());
+        Object state = allConfirmMap.get(buildCounterpartyConfirmKey(party));
+        if (state instanceof Map<?, ?> stateMap) {
+            item.putAll((Map<? extends String, ?>) stateMap);
+        } else {
+            item.put("confirmed", false);
+        }
+        return item;
+    }
+
     private void applyQueryScope(ContractLaunchQueryDto queryDto, SysUserEntity currentUser) {
         ContractLaunchQueryDto scopeQuery = buildScopeQuery(currentUser);
         queryDto.setQueryScope(scopeQuery.getQueryScope());