diff --git a/app/service/AdsInsightService.php b/app/service/AdsInsightService.php
index c8dedfc..8d26de5 100644
--- a/app/service/AdsInsightService.php
+++ b/app/service/AdsInsightService.php
@@ -525,7 +525,7 @@ class AdsInsightService
 
         // 计算 ROAS
         $roas = $total_spend == 0 ? '-' : round($total_purchases_value / $total_spend, 2);
-
+        $cost_per_purchase = $total_purchases == 0? '-' : round($total_spend / $total_purchases, 2);
         // 计算 CTR
         $ctr = $total_impressions > 0 ? number_format(($total_clicks / $total_impressions) * 100, 2) . '%' : '-';
 
@@ -541,6 +541,7 @@ class AdsInsightService
             'cost_per_atc' => $total_cost_per_atc,
             'purchases' => $total_purchases,
             'purchases_value' => '$' . number_format($total_purchases_value, 2) ?: '$0.00', // 格式化销售额$total_purchases_value,
+            'cost_per_purchase' => '$' . number_format($cost_per_purchase, 2) ?: '$0.00', // 格式化销售额$total_purchases_value,
             'revenue' => '$' . number_format($total_revenue, 2) ?: '$0.00', // 格式化收入
             'total_cost' => '$' . number_format($total_cost, 2) ?: '$0.00', // 格式化总成本
             'conversion_rate' => '-',  // 没有计算逻辑，保持为 '-'
@@ -575,6 +576,7 @@ class AdsInsightService
                     'cost_per_atc' => 0,
                     'purchases' => 0,
                     'purchases_value' => 0,
+                    'cost_per_purchase' => 0,
                     'revenue' => 0,
                     'total_cost' => 0,
                     'net_profit' => '-',  // 没有提供 net_profit，保持为 '-'
@@ -616,6 +618,7 @@ class AdsInsightService
             $aggregatedUsers[$userId]['roas']            = $total_spend == 0 ? '-' : round($total_purchases_value / $total_spend, 2);
             $aggregatedUsers[$userId]['amount_spend']    = '$' . number_format($total_spend, 2) ?: '$0.00';
             $aggregatedUsers[$userId]['purchases_value'] = '$' . number_format($total_purchases_value, 2) ?: '$0.00';
+            $aggregatedUsers[$userId]['cost_per_purchase'] = $data['purchases'] == 0 ? '$0.00' : '$' . number_format($total_purchases_value / $data['purchases'], 2);
             $aggregatedUsers[$userId]['revenue']         = '$' . number_format($total_revenue, 2) ?: '$0.00';
             $aggregatedUsers[$userId]['total_cost']      = '$' . number_format($total_cost, 2) ?: '$0.00';
             $aggregatedUsers[$userId]['conversion_rate'] = $total_impressions == 0 ? '-' : round(($total_clicks / $total_impressions) * 100, 2) . '%';