diff --git a/backend/app/plugins/stocksdk/provider.py b/backend/app/plugins/stocksdk/provider.py
index c3481a4..97edeb0 100644
--- a/backend/app/plugins/stocksdk/provider.py
+++ b/backend/app/plugins/stocksdk/provider.py
@@ -203,7 +203,16 @@ class StockSDKProvider:
         except bridge.StockSDKBridgeError as e:
             logger.warning("stock-sdk realtime 拉取失败: %s", e)
             return []
-        return result.get("rows") or []
+        rows = result.get("rows") or []
+        normalized: list[dict] = []
+        for row in rows:
+            item = dict(row)
+            # stock-sdk 的 changePercent 是百分数值(-1.15 = -1.15%);
+            # provider 入口契约统一使用小数制(-0.0115 = -1.15%)。
+            if item.get("change_pct") is not None:
+                item["change_pct"] = float(item["change_pct"]) / 100
+            normalized.append(item)
+        return normalized
 
     # ---- instruments (标的维表) ----
     def get_instruments(self, asset_type: str = "stock") -> list[dict]:
diff --git a/backend/tests/test_stocksdk_provider.py b/backend/tests/test_stocksdk_provider.py
index d6ddc57..b6a2b4d 100644
--- a/backend/tests/test_stocksdk_provider.py
+++ b/backend/tests/test_stocksdk_provider.py
@@ -80,12 +80,14 @@ def test_get_minute_datetime_is_beijing_wall_clock(monkeypatch):
     assert df["symbol"][0] == "600519.SH"
 
 
-def test_get_realtime_passthrough(monkeypatch):
+def test_get_realtime_normalizes_change_pct_to_decimal(monkeypatch):
     rows = [{"symbol": "600519.SH", "name": "贵州茅台", "last_price": 1200.0,
-             "prev_close": 1194.0, "open": 1186.0, "high": 1203.0, "low": 1180.0, "volume": 16325}]
+             "prev_close": 1194.0, "open": 1186.0, "high": 1203.0, "low": 1180.0,
+             "volume": 16325, "change_pct": -1.15}]
     _patch_run_job(monkeypatch, {"realtime": {"ok": True, "op": "realtime", "rows": rows}})
     out = StockSDKProvider().get_realtime()
-    assert out == rows
+    assert abs(out[0]["change_pct"] - (-0.0115)) < 1e-12
+    assert rows[0]["change_pct"] == -1.15
     required = {"symbol", "last_price", "prev_close", "open", "high", "low", "volume"}
     assert required <= set(out[0].keys())