diff --git a/apps/backend/src/repositories/worker-platform/work-order-repo.ts b/apps/backend/src/repositories/worker-platform/work-order-repo.ts
index b4bf9a45..4bdfafaa 100644
--- a/apps/backend/src/repositories/worker-platform/work-order-repo.ts
+++ b/apps/backend/src/repositories/worker-platform/work-order-repo.ts
@@ -2402,13 +2402,16 @@ export async function acceptWorkOrderShareAndSettle(input: {
           ],
         )
       }
-      await maybeUpgradeWorkerLevelWithClient(client, workerId, input.now)
     }
 
     await client.query(
       `UPDATE work_order_shares SET status = 'accepted', accepted_at = $1, updated_at = $1 WHERE id = $2`,
       [input.now, input.shareId],
     )
+    if (workerId > 0) {
+      // 先落库份额已验收状态，再按去重后的订单数计算等级进度。
+      await maybeUpgradeWorkerLevelWithClient(client, workerId, input.now)
+    }
     const progressResult = await client.query<{
       joined_quantity: number
       unfinished_count: number
diff --git a/apps/backend/src/repositories/worker-platform/worker-repo.ts b/apps/backend/src/repositories/worker-platform/worker-repo.ts
index e596197f..ca966671 100644
--- a/apps/backend/src/repositories/worker-platform/worker-repo.ts
+++ b/apps/backend/src/repositories/worker-platform/worker-repo.ts
@@ -942,16 +942,33 @@ export async function getWorkerFinanceRequestSummary(workerId: number | string)
   }
 }
 
+/** 完成单数按源订单去重，拼单份数只影响收益，不增加完成单数。 */
 export async function countWorkerAcceptedOrders(workerId: number | string): Promise<number> {
   const result = await query<{ total: number }>(
     `
-      SELECT
-        (SELECT COUNT(*)::int FROM work_orders WHERE assigned_worker_id = $1 AND status = 'accepted')
-        +
-        COALESCE(
-          (SELECT SUM(quantity)::int FROM work_order_shares WHERE worker_id = $1 AND status = 'accepted'),
-          0
-        ) AS total
+      SELECT COUNT(DISTINCT order_key)::int AS total
+      FROM (
+        SELECT
+          COALESCE(
+            'order:' || NULLIF(wo.order_id::text, ''),
+            'platform_order:' || NULLIF(BTRIM(wo.platform_order_id), ''),
+            'work_order:' || wo.id::text
+          ) AS order_key
+        FROM work_orders wo
+        WHERE wo.assigned_worker_id = $1 AND wo.status = 'accepted'
+
+        UNION
+
+        SELECT
+          COALESCE(
+            'order:' || NULLIF(wo.order_id::text, ''),
+            'platform_order:' || NULLIF(BTRIM(wo.platform_order_id), ''),
+            'work_order:' || wo.id::text
+          ) AS order_key
+        FROM work_order_shares wos
+        INNER JOIN work_orders wo ON wo.id = wos.work_order_id
+        WHERE wos.worker_id = $1 AND wos.status = 'accepted'
+      ) AS completed_orders
     `,
     [Number(workerId)],
   )
@@ -989,12 +1006,16 @@ export async function listWorkerCompletionLeaderboard(input: {
       accepted_totals AS (
         SELECT
           worker_id,
-          SUM(accepted_order_count)::int AS accepted_order_count,
+          COUNT(DISTINCT order_key)::int AS accepted_order_count,
           MAX(last_accepted_at) AS last_accepted_at
         FROM (
           SELECT
             assigned_worker_id AS worker_id,
-            COUNT(*)::int AS accepted_order_count,
+            COALESCE(
+              'order:' || NULLIF(order_id::text, ''),
+              'platform_order:' || NULLIF(BTRIM(platform_order_id), ''),
+              'work_order:' || id::text
+            ) AS order_key,
             MAX(accepted_at) AS last_accepted_at
           FROM work_orders
           CROSS JOIN leaderboard_day
@@ -1004,22 +1025,27 @@ export async function listWorkerCompletionLeaderboard(input: {
               $3::boolean = false
               OR (accepted_at >= leaderboard_day.starts_at AND accepted_at < leaderboard_day.starts_at + INTERVAL '1 day')
             )
-          GROUP BY assigned_worker_id
+          GROUP BY assigned_worker_id, order_key
 
           UNION ALL
 
           SELECT
-            worker_id,
-            COALESCE(SUM(quantity), 0)::int AS accepted_order_count,
-            MAX(accepted_at) AS last_accepted_at
-          FROM work_order_shares
+            wos.worker_id,
+            COALESCE(
+              'order:' || NULLIF(wo.order_id::text, ''),
+              'platform_order:' || NULLIF(BTRIM(wo.platform_order_id), ''),
+              'work_order:' || wo.id::text
+            ) AS order_key,
+            MAX(wos.accepted_at) AS last_accepted_at
+          FROM work_order_shares wos
+          INNER JOIN work_orders wo ON wo.id = wos.work_order_id
           CROSS JOIN leaderboard_day
-          WHERE status = 'accepted'
+          WHERE wos.status = 'accepted'
             AND (
               $3::boolean = false
-              OR (accepted_at >= leaderboard_day.starts_at AND accepted_at < leaderboard_day.starts_at + INTERVAL '1 day')
+              OR (wos.accepted_at >= leaderboard_day.starts_at AND wos.accepted_at < leaderboard_day.starts_at + INTERVAL '1 day')
             )
-          GROUP BY worker_id
+          GROUP BY wos.worker_id, order_key
         ) AS accepted_records
         GROUP BY worker_id
       ),
@@ -1081,13 +1107,29 @@ export async function maybeUpgradeWorkerLevelWithClient(
 
   const acceptedResult = await client.query<{ total: number }>(
     `
-      SELECT
-        (SELECT COUNT(*)::int FROM work_orders WHERE assigned_worker_id = $1 AND status = 'accepted')
-        +
-        COALESCE(
-          (SELECT SUM(quantity)::int FROM work_order_shares WHERE worker_id = $1 AND status = 'accepted'),
-          0
-        ) AS total
+      SELECT COUNT(DISTINCT order_key)::int AS total
+      FROM (
+        SELECT
+          COALESCE(
+            'order:' || NULLIF(wo.order_id::text, ''),
+            'platform_order:' || NULLIF(BTRIM(wo.platform_order_id), ''),
+            'work_order:' || wo.id::text
+          ) AS order_key
+        FROM work_orders wo
+        WHERE wo.assigned_worker_id = $1 AND wo.status = 'accepted'
+
+        UNION
+
+        SELECT
+          COALESCE(
+            'order:' || NULLIF(wo.order_id::text, ''),
+            'platform_order:' || NULLIF(BTRIM(wo.platform_order_id), ''),
+            'work_order:' || wo.id::text
+          ) AS order_key
+        FROM work_order_shares wos
+        INNER JOIN work_orders wo ON wo.id = wos.work_order_id
+        WHERE wos.worker_id = $1 AND wos.status = 'accepted'
+      ) AS completed_orders
     `,
     [workerId],
   )