diff --git a/app/Http/Controllers/Mobile/SupplyDemandController.php b/app/Http/Controllers/Mobile/SupplyDemandController.php
index d01220d..3221734 100755
--- a/app/Http/Controllers/Mobile/SupplyDemandController.php
+++ b/app/Http/Controllers/Mobile/SupplyDemandController.php
@@ -259,6 +259,12 @@ class SupplyDemandController extends CommonController
             if (isset($all['supply_demand_id'])) {
                 SupplyDemand::where('id', $all['supply_demand_id'])->increment('contact_count');
             }
+        } else {
+            // 存在对话，如果也存在供需信息id，则更新供需id到最新
+            if (isset($all['supply_demand_id'])) {
+                $dialogue->supply_demand_id = $all['supply_demand_id'];
+                $dialogue->save();
+            }
         }
         if (isset($all['supply_demand_id'])) {
             $now = date('Y-m-d');