diff --git a/apps/api/app/api/routes/generation_tasks.py b/apps/api/app/api/routes/generation_tasks.py
index 9fdba91c5..c322a4f80 100755
--- a/apps/api/app/api/routes/generation_tasks.py
+++ b/apps/api/app/api/routes/generation_tasks.py
@@ -873,7 +873,6 @@ def confirm_generation(
             template_id=source_task.template_id,
             asset_ids=source_task.asset_ids,
             title_ids=source_task.title_ids,
-            voice_ids=source_task.voice_ids,
             created_by_user_id=authenticated_user.user.id,
             source_edit_plan_id=source_task.source_edit_plan_id or "",
             asset_select_mode=source_task.asset_select_mode,
diff --git a/tests/unit/test_confirm_generation.py b/tests/unit/test_confirm_generation.py
index 69877544d..cb3c2074c 100644
--- a/tests/unit/test_confirm_generation.py
+++ b/tests/unit/test_confirm_generation.py
@@ -356,7 +356,8 @@ class TestConfirmGenerationErrors:
         assert item["voice_library_id"] == "voice-001"
         assert item["template_id"] == "tmpl-001"
         assert item["title_ids"] == ["title-1", "title-2"]
-        assert item["voice_ids"] == ["voice-a"]
+        # #1749：voice_ids 已废弃（配音走 voice_library_id），确认生成不再保留原值
+        assert item["voice_ids"] == []
 
     def test_confirm_cover_and_title(
         self,