diff --git a/sanguo_portfolio/weekly_report.py b/sanguo_portfolio/weekly_report.py
index 084db1ec..bc5bf291 100644
--- a/sanguo_portfolio/weekly_report.py
+++ b/sanguo_portfolio/weekly_report.py
@@ -31,13 +31,16 @@ def _week_start(d: date) -> date:
 
 
 def daily_returns(series: list[tuple[str, float]]) -> dict[str, float]:
-    """[(date, equity)] → {date: 当日收益率};首日无前值跳过,前值 0 防除零.
-
-    平盘日(收益 0.0)照记不剔除——剔除会低估 TE(M5 终审裁定).
+    """[(date, equity)] → {date: 当日收益率};同日多行取末次写入(多写者日末终值),
+    首日无前值跳过,前值 0 防除零.平盘日(收益 0.0)照记不剔除——剔除会低估 TE(M5 终审裁定).
     """
+    last: dict[str, float] = {}
+    for d, eq in series:
+        last[d] = eq
     out: dict[str, float] = {}
     prev: float | None = None
-    for d, eq in sorted(series):
+    for d in sorted(last):
+        eq = last[d]
         if prev is not None and prev != 0:
             out[d] = eq / prev - 1.0
         prev = eq
@@ -57,7 +60,7 @@ def load_actual_daily_returns(db_path: str, account_id: int,
 
 def load_backtest_daily_returns(db_path: str,
                                 task_id: str) -> dict[str, float] | None:
-    """回测基准:backtest_stats 最新行 → equity_path JSON(date/balance,orient=records)."""
+    """回测基准:backtest_stats 最新行 → equity_path JSON(date/balance|equity,orient=records)."""
     with sqlite3.connect(db_path) as conn:
         row = conn.execute(
             "SELECT equity_path FROM backtest_stats WHERE task_id=? "
@@ -67,11 +70,13 @@ def load_backtest_daily_returns(db_path: str,
     try:
         import pandas as pd
         ec = pd.read_json(row[0], orient="records")
-        if "balance" not in ec.columns:
+        col = "balance" if "balance" in ec.columns else (
+            "equity" if "equity" in ec.columns else None)
+        if col is None:
             return None
         dates = pd.to_datetime(ec["date"]).dt.strftime("%Y-%m-%d")
         series = list(zip(dates.tolist(),
-                          pd.to_numeric(ec["balance"], errors="coerce").tolist()))
+                          pd.to_numeric(ec[col], errors="coerce").tolist()))
         series = [(d, float(v)) for d, v in series if v == v]  # NaN 剔除
         return daily_returns(series) if series else None
     except Exception as exc:
diff --git a/tests/portfolio/test_weekly_report.py b/tests/portfolio/test_weekly_report.py
index 117dc3a5..8563c1ad 100644
--- a/tests/portfolio/test_weekly_report.py
+++ b/tests/portfolio/test_weekly_report.py
@@ -84,6 +84,15 @@ def test_daily_returns_keeps_flat_days():
     assert r["c"] == pytest.approx(0.01)
 
 
+def test_daily_returns_dedupes_same_date():
+    # 同日多行(paper_daily_balance 每日 2-3 行多写者)取末次后再 diff;
+    # 不去重则排序后同日第二行覆写成日内 0.0,毒化跨日收益
+    r = daily_returns([("2026-09-21", 100.0), ("2026-09-22", 110.0),
+                       ("2026-09-22", 110.0), ("2026-09-23", 121.0)])
+    assert r == {"2026-09-22": pytest.approx(0.1),
+                 "2026-09-23": pytest.approx(0.1)}
+
+
 def test_tracking_error_aligned_and_none():
     a = {"d1": 0.01, "d2": -0.01, "d3": 0.01}
     b = {"d1": 0.01, "d2": -0.01, "d3": 0.01}
@@ -114,6 +123,21 @@ def test_load_backtest_daily_returns(main_db):
     assert load_backtest_daily_returns(main_db, "nope") is None
 
 
+def test_backtest_loader_accepts_equity_column(main_db, tmp_path):
+    # 生产回测 equity JSON 用 equity 列(balance-only 校验把真文件全拒→te/vs 恒 None)
+    eq_path = str(tmp_path / "bt_equity.json")
+    with open(eq_path, "w", encoding="utf-8") as f:
+        json.dump([{"date": "2026-09-21", "equity": 100.0},
+                   {"date": "2026-09-22", "equity": 101.0}], f)
+    conn = sqlite3.connect(main_db)
+    conn.execute("INSERT INTO backtest_stats(task_id, equity_path) "
+                 "VALUES('bt_run_equity',?)", (eq_path,))
+    conn.commit()
+    conn.close()
+    got = load_backtest_daily_returns(main_db, "bt_run_equity")
+    assert got == {"2026-09-22": pytest.approx(0.01)}
+
+
 def test_load_actual_daily_returns_skips_null_equity(tmp_path):
     # M4:total_equity NULL 行剔除(不折算成 0 毒化收益链)
     p = str(tmp_path / "null_eq.db")