diff --git a/common/services/SalespersonOrderBindService.php b/common/services/SalespersonOrderBindService.php
new file mode 100644
index 0000000..da500e0
--- /dev/null
+++ b/common/services/SalespersonOrderBindService.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace common\services;
+
+use Yii;
+
+/**
+ * 推广员与订单/挂号绑定解析（与 Laravel SalespersonOrderBindService 规则一致）。
+ */
+class SalespersonOrderBindService
+{
+    /**
+     * @return array{salesperson_id: int, user_salesperson_id: int}
+     */
+    public function resolveForOrder(int $userId, int $storeId, int $orderCreatedAt): array
+    {
+        $empty = ['salesperson_id' => 0, 'user_salesperson_id' => 0];
+
+        if ($userId <= 0 || $storeId <= 0) {
+            return $empty;
+        }
+
+        $bind = (new \yii\db\Query())
+            ->from('xk_user_salesperson')
+            ->where(['user_id' => $userId, 'status' => 0])
+            ->orderBy(['id' => SORT_DESC])
+            ->one();
+
+        if (!$bind) {
+            return $empty;
+        }
+
+        $salespersonId = (int) ($bind['salesperson_id'] ?? 0);
+        if ($salespersonId <= 0) {
+            return $empty;
+        }
+
+        $storeIds = (new \yii\db\Query())
+            ->select('store_id')
+            ->from('xk_salesperson_qr_code')
+            ->where(['salesperson_id' => $salespersonId])
+            ->column();
+
+        $storeIds = array_map('intval', $storeIds);
+        if (!in_array($storeId, $storeIds, true)) {
+            return $empty;
+        }
+
+        $bindCreatedAt = $bind['created_at'] ?? 0;
+        if (!is_numeric($bindCreatedAt)) {
+            $bindCreatedAt = strtotime((string) $bindCreatedAt);
+        }
+        $bindCreatedAt = (int) $bindCreatedAt;
+
+        if ($orderCreatedAt <= $bindCreatedAt) {
+            return $empty;
+        }
+
+        $salesperson = (new \yii\db\Query())
+            ->from('xk_salesperson')
+            ->where(['id' => $salespersonId])
+            ->one();
+
+        if (!$salesperson) {
+            return $empty;
+        }
+
+        return [
+            'salesperson_id' => (int) $salesperson['id'],
+            'user_salesperson_id' => (int) ($bind['id'] ?? 0),
+        ];
+    }
+}