diff --git a/admin/src/views/first_visit/conversion/index.vue b/admin/src/views/first_visit/conversion/index.vue
index 9d52ac22c..2a320172d 100644
--- a/admin/src/views/first_visit/conversion/index.vue
+++ b/admin/src/views/first_visit/conversion/index.vue
@@ -154,7 +154,7 @@
             <div class="panel-heading panel-heading--table">
                 <div>
                     <h2>明细数据列表</h2>
-                    <p>展开部门可查看人员明细；加粉=总进线=区间新增“员工+客户”组合（同一员工的同一客户只计一次，同一客户进入不同员工分别计数；包含区间内添加后已删客户，剔除继承客户、扫一扫/搜手机号/名片分享添加及区间前已存在的相同组合）<template v-if="canViewDeletedFans">，（-N）表示加粉组合中已删除</template>；挂号=已支付且实收低于 10 元的订单，预约=有效预约记录；开口率=开口/加粉，挂号率=挂号/加粉，面诊率=面诊/挂号（看挂号后流失），预约率=面诊/预约（看预约后未面诊），面诊接诊率=接诊诊单/面诊，接诊率=接诊诊单/总进线</p>
+                    <p>展开部门可查看人员明细；加粉=总进线=区间新增“员工+客户”组合（同一员工的同一客户只计一次，同一客户进入不同员工分别计数；包含区间内添加后已删客户，剔除继承客户、扫一扫/搜手机号/名片分享添加及区间前已存在的相同组合）<template v-if="canViewDeletedFans">，（-N）表示加粉组合中已删除</template>；开口=获客客户首次发起会话事件，按开口时间计入，同一员工的同一客户只计一次；挂号=已支付且实收低于 10 元的订单，预约=有效预约记录；开口率=开口/加粉，挂号率=挂号/加粉，面诊率=面诊/挂号（看挂号后流失），预约率=面诊/预约（看预约后未面诊），面诊接诊率=接诊诊单/面诊，接诊率=接诊诊单/总进线</p>
                 </div>
                 <span>{{ dashboard.rows.length }} 个顶层节点</span>
             </div>
@@ -449,7 +449,7 @@ const timeOptions = [
 ]
 const metricCards: Array<{ key: string; label: string; type: MetricType; hint: string }> = [
     { key: 'add_fans_count', label: '加粉数', type: 'count', hint: '区间新增员工+客户组合（不同员工分别计数，含已删除）' },
-    { key: 'total_open_count', label: '开口数', type: 'count', hint: '来源于个人业绩录入' },
+    { key: 'total_open_count', label: '开口数', type: 'count', hint: '获客客户首次发起会话；按开口时间统计，同一员工的同一客户只计一次' },
     { key: 'interview_count', label: '面诊', type: 'count', hint: '已完成预约' },
     { key: 'completed_order_count', label: '接诊诊单', type: 'count', hint: '业务订单，按创建人归属并过滤无效单' },
     { key: 'completed_order_amount', label: '诊单金额', type: 'money', hint: '排除取消、拒收、退款及已退款订单' },
diff --git a/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php b/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php
index 334ce4f05..d9682515c 100644
--- a/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php
+++ b/server/app/adminapi/logic/firstvisit/FirstVisitConversionLogic.php
@@ -10,7 +10,6 @@ use app\adminapi\logic\stats\ConversionLogic;
 use app\adminapi\logic\stats\YejiStatsLogic;
 use app\common\model\auth\Admin;
 use app\common\model\auth\AdminDept;
-use app\common\model\stats\PersonalYeji;
 use app\common\service\DataScope\DataScopeService;
 use app\common\service\qywx\MediaChannelService;
 use think\facade\Db;
@@ -18,7 +17,7 @@ use think\facade\Db;
 /**
  * 一诊「综合数据转化」。
  *
- * 自动指标复用 ConversionLogic；开口数来自个人业绩录入。所有筛选先与 DataScope
+ * 自动指标复用 ConversionLogic；开口数来自获客客户首次发起会话事件。所有筛选先与 DataScope
  * 可见管理员集合取交集，HTTP 参数不能扩大当前账号的数据范围。
  */
 class FirstVisitConversionLogic
@@ -94,7 +93,7 @@ class FirstVisitConversionLogic
             $endDate,
             $effectiveAdminIds,
             array_fill_keys(array_keys($rowDeptIdSet), true),
-            self::personalYejiMediaSources($selectedMediaChannelCode, $selectedMediaChannel)
+            $selectedMediaChannel
         );
         $openDirect = $openCounts['dept'];
         self::applyOpenCounts($rows, $openDirect, $openCounts['admin']);
@@ -159,8 +158,8 @@ class FirstVisitConversionLogic
                 'selected_media_channel_code' => $selectedMediaChannelCode,
                 'selected_media_channel_name' => $selectedMediaChannelName,
                 'open_count_source' => $selectedMediaChannelCode === ''
-                    ? '个人业绩录入'
-                    : '个人业绩录入（按渠道名称匹配）',
+                    ? '企微获客客户首次开口事件'
+                    : '企微获客客户首次开口事件（按当前客户标签筛选渠道）',
                 'can_view_finance' => $canViewFinance,
                 'appointment_rule' => '按预约日期统计，归属优先挂号医助、再回退诊单医助；仅含已预约、已完成和已过号',
                 'registration_rule' => '按支付时间统计已支付且实收金额大于 0、低于 10 元的订单，每笔计 1 个挂号并按订单创建人归属',
@@ -713,7 +712,7 @@ class FirstVisitConversionLogic
     /**
      * @param int[]|null $effectiveAdminIds
      * @param array<int,true> $rowDeptSet
-     * @param string[]|null $mediaSources null=全部渠道；空数组=所选渠道没有可匹配的手工来源
+     * @param array<string,mixed>|null $mediaChannel null=全部渠道
      * @return array{dept:array<int,int>,admin:array<int,int>}
      */
     private static function loadOpenCounts(
@@ -721,22 +720,42 @@ class FirstVisitConversionLogic
         string $endDate,
         ?array $effectiveAdminIds,
         array $rowDeptSet,
-        ?array $mediaSources = null
+        ?array $mediaChannel = null
     ): array
     {
-        if ($effectiveAdminIds === [] || $rowDeptSet === [] || $mediaSources === []) {
+        if ($effectiveAdminIds === [] || $rowDeptSet === []) {
             return ['dept' => [], 'admin' => []];
         }
-        $query = PersonalYeji::whereBetween('yeji_date', [$startDate, $endDate]);
+        $startTimestamp = strtotime($startDate . ' 00:00:00');
+        $endTimestamp = strtotime($endDate . ' 23:59:59');
+        $query = Db::name('qywx_customer_acquisition_event')
+            ->alias('open_event')
+            ->join(
+                'qywx_customer_acquisition_customer acquisition_customer',
+                'acquisition_customer.link_id = open_event.link_id'
+                    . ' AND acquisition_customer.external_userid = open_event.external_userid'
+                    . ' AND acquisition_customer.userid = open_event.userid'
+            )
+            ->where('open_event.change_type', 'customer_start_chat')
+            ->where('open_event.status', 1)
+            ->whereBetween('open_event.event_time', [$startTimestamp, $endTimestamp])
+            ->where('acquisition_customer.chat_status', 1)
+            ->where('acquisition_customer.owner_admin_id', '>', 0);
         if ($effectiveAdminIds !== null) {
-            $query->whereIn('creator_id', $effectiveAdminIds);
+            $query->whereIn('acquisition_customer.owner_admin_id', $effectiveAdminIds);
         }
-        if ($mediaSources !== null) {
-            $query->whereIn('media_source', $mediaSources);
+        if ($mediaChannel !== null) {
+            MediaChannelService::applyExternalUserChannelFilter(
+                $query,
+                'acquisition_customer.external_userid',
+                $mediaChannel,
+                'acquisition_customer.userid'
+            );
         }
         $rows = $query
-            ->fieldRaw('creator_id, SUM(total_open_count) AS open_count')
-            ->group('creator_id')
+            // 客户可从多个获客链接进入；按员工+客户去重，与加粉组合口径一致。
+            ->fieldRaw('acquisition_customer.owner_admin_id AS creator_id, COUNT(DISTINCT acquisition_customer.external_userid) AS open_count')
+            ->group('acquisition_customer.owner_admin_id')
             ->select()
             ->toArray();
         if ($rows === []) {
@@ -871,44 +890,6 @@ class FirstVisitConversionLogic
         return $sum;
     }
 
-    /**
-     * 手工开口按 personal_yeji.media_source 保存；渠道筛选时仅匹配该渠道自身的稳定标识和名称。
-     * 不使用 source_group_name，避免同组多个渠道的开口数被重复计入每个渠道。
-     *
-     * @param array<string,mixed>|null $channel
-     * @return string[]|null
-     */
-    private static function personalYejiMediaSources(string $channelCode, ?array $channel): ?array
-    {
-        if ($channelCode === '') {
-            return null;
-        }
-        if ($channel === null) {
-            return [];
-        }
-
-        $values = [
-            $channelCode,
-            $channel['channel_name'] ?? '',
-            $channel['source_tag_name'] ?? '',
-            $channel['legacy_channel_name'] ?? '',
-            $channel['legacy_source_tag_name'] ?? '',
-        ];
-        foreach (['channel_codes', 'channel_names', 'source_tag_names'] as $listKey) {
-            if (!isset($channel[$listKey]) || !is_array($channel[$listKey])) {
-                continue;
-            }
-            foreach ($channel[$listKey] as $item) {
-                $values[] = $item;
-            }
-        }
-
-        return array_values(array_unique(array_filter(array_map(
-            static fn ($value): string => trim((string) $value),
-            $values
-        ), static fn (string $value): bool => $value !== '' && !str_starts_with($value, MediaChannelService::GROUP_CODE_PREFIX))));
-    }
-
     private static function canViewFinance(int $adminId, array $adminInfo): bool
     {
         if ((int) ($adminInfo['root'] ?? 0) === 1) {