diff --git a/packages/domain/ass_subtitle_builder.py b/packages/domain/ass_subtitle_builder.py
index 9d949200d..d45bf5642 100755
--- a/packages/domain/ass_subtitle_builder.py
+++ b/packages/domain/ass_subtitle_builder.py
@@ -20,8 +20,8 @@ logger = logging.getLogger(__name__)
 # ── 常量 ──────────────────────────────────────────────────────────────────────
 
 # Title/Subtitle 默认边距（像素）
-TITLE_MARGIN_TOP = 120
-TITLE_MARGIN_BOTTOM = 60
+TITLE_MARGIN_TOP = 180
+TITLE_MARGIN_BOTTOM = 100
 TITLE_MARGIN_SIDE = 40
 
 # 字体名称映射：前端中文字体名 → 服务器实际注册名（ffmpeg/ASS 通过注册名匹配字体）
diff --git a/tests/unit/test_ass_subtitle_builder.py b/tests/unit/test_ass_subtitle_builder.py
index 4b095fd96..99bcced7a 100755
--- a/tests/unit/test_ass_subtitle_builder.py
+++ b/tests/unit/test_ass_subtitle_builder.py
@@ -473,10 +473,10 @@ class TestBuildAssContent:
 
 class TestConstants:
     def test_title_margin_top(self):
-        assert TITLE_MARGIN_TOP == 120
+        assert TITLE_MARGIN_TOP == 180
 
     def test_title_margin_bottom(self):
-        assert TITLE_MARGIN_BOTTOM == 60
+        assert TITLE_MARGIN_BOTTOM == 100
 
     def test_title_margin_side(self):
         assert TITLE_MARGIN_SIDE == 40