diff --git a/backend/app/services/preferences.py b/backend/app/services/preferences.py
index 7e44e19..10bda6b 100644
--- a/backend/app/services/preferences.py
+++ b/backend/app/services/preferences.py
@@ -308,8 +308,8 @@ def get_financial_provider() -> str:
 # ===== 盘后管道拉取内容开关 (A股 / ETF / 指数 独立控制) =====
 
 def get_pipeline_pull_a_share() -> bool:
-    """A 股日K固定拉取。"""
-    return True
+    """是否拉取 A 股日K。默认 True。"""
+    return load().get("pipeline_pull_a_share", True)
 
 
 def get_pipeline_pull_etf() -> bool:
@@ -453,7 +453,7 @@ def set_mainline_filter_config(cfg: dict) -> dict:
     return get_mainline_filter_config()
 
 
-_PIPELINE_PULL_KEYS = ("pipeline_pull_etf", "pipeline_pull_index")
+_PIPELINE_PULL_KEYS = ("pipeline_pull_a_share", "pipeline_pull_etf", "pipeline_pull_index")
 
 
 def get_pipeline_pull_types() -> dict:
diff --git a/backend/tests/test_pipeline_pull_types.py b/backend/tests/test_pipeline_pull_types.py
new file mode 100644
index 0000000..e8b65fe
--- /dev/null
+++ b/backend/tests/test_pipeline_pull_types.py
@@ -0,0 +1,60 @@
+"""盘后管道「A股 / ETF / 指数」拉取开关回归测试。
+
+覆盖 issue #216: `get_pipeline_pull_a_share()` 硬编码 True 且 A股键不在
+`set_pipeline_pull_types()` 白名单内, 导致取消勾选 A 股完全不生效。
+
+纯逻辑, 不触网, 不依赖真实数据源。
+"""
+from __future__ import annotations
+
+import pytest
+
+from app.services import preferences
+
+
+@pytest.fixture(autouse=True)
+def _isolated(tmp_path, monkeypatch):
+    path = tmp_path / "preferences.json"
+    monkeypatch.setattr(preferences, "_path", lambda: path)
+    preferences._invalidate_cache()
+    yield path
+    preferences._invalidate_cache()
+
+
+def test_a_share_defaults_to_true_when_unset():
+    """未设置时三个开关的默认值: A股/指数 默认开, ETF 默认关。"""
+    assert preferences.get_pipeline_pull_a_share() is True
+    assert preferences.get_pipeline_pull_index() is True
+    assert preferences.get_pipeline_pull_etf() is False
+
+
+def test_a_share_toggle_off_is_honored():
+    """写入 False 后 getter 必须返回 False(修复前硬编码 True)。"""
+    preferences.save({"pipeline_pull_a_share": False})
+    assert preferences.get_pipeline_pull_a_share() is False
+
+
+def test_set_pipeline_pull_types_persists_a_share():
+    """setter 必须接受并落盘 A 股开关(修复前白名单遗漏该键, 被静默丢弃)。"""
+    result = preferences.set_pipeline_pull_types({"pipeline_pull_a_share": False})
+    assert result["pipeline_pull_a_share"] is False
+    # 落盘后重新读取仍为 False
+    preferences._invalidate_cache()
+    assert preferences.get_pipeline_pull_a_share() is False
+    assert preferences.get_pipeline_pull_types()["pipeline_pull_a_share"] is False
+
+
+def test_set_pipeline_pull_types_independent_switches():
+    """三个开关互相独立: 关 A 股不影响 ETF / 指数。"""
+    result = preferences.set_pipeline_pull_types(
+        {
+            "pipeline_pull_a_share": False,
+            "pipeline_pull_etf": True,
+            "pipeline_pull_index": False,
+        }
+    )
+    assert result == {
+        "pipeline_pull_a_share": False,
+        "pipeline_pull_etf": True,
+        "pipeline_pull_index": False,
+    }