diff --git a/backend/signal_engine.py b/backend/signal_engine.py
index 5b73190..fc5860c 100644
--- a/backend/signal_engine.py
+++ b/backend/signal_engine.py
@@ -1023,6 +1023,62 @@ def save_indicator(ts: int, symbol: str, result: dict, strategy: str = "v52_8sig
             conn.commit()
 
 
+def save_feature_event(ts: int, symbol: str, result: dict, strategy: str):
+    """
+    V5.3 专用：每次评分后把 raw features + score 层写入 signal_feature_events。
+    只对 v53_alt / v53_btc 调用，其他策略跳过。
+    """
+    if strategy not in ("v53_alt", "v53_btc"):
+        return
+    f = result.get("factors") or {}
+    track = f.get("track", "ALT")
+    side = result.get("direction") or ("LONG" if result.get("score", 0) >= 0 else "SHORT")
+    # ALT层分
+    score_direction = (f.get("direction") or {}).get("score", 0) if track == "ALT" else None
+    score_crowding  = (f.get("crowding")  or {}).get("score", 0) if track == "ALT" else None
+    score_env       = (f.get("environment") or {}).get("score", 0) if track == "ALT" else None
+    score_aux       = (f.get("auxiliary") or {}).get("score", 0) if track == "ALT" else None
+    gate_passed     = f.get("gate_passed") if track == "BTC" else None
+    block_reason    = f.get("block_reason") if track == "BTC" else None
+
+    with get_sync_conn() as conn:
+        with conn.cursor() as cur:
+            cur.execute(
+                """
+                INSERT INTO signal_feature_events
+                  (ts, symbol, track, side, strategy, strategy_version,
+                   cvd_fast_raw, cvd_mid_raw, cvd_day_raw, cvd_fast_slope_raw,
+                   p95_qty_raw, p99_qty_raw,
+                   atr_value, atr_percentile,
+                   oi_delta_raw, ls_ratio_raw, top_pos_raw, coinbase_premium_raw,
+                   obi_raw, tiered_cvd_whale_raw,
+                   score_direction, score_crowding, score_environment, score_aux, score_total,
+                   gate_passed, block_reason, price)
+                VALUES
+                  (%s,%s,%s,%s,%s,%s,
+                   %s,%s,%s,%s,
+                   %s,%s,
+                   %s,%s,
+                   %s,%s,%s,%s,
+                   %s,%s,
+                   %s,%s,%s,%s,%s,
+                   %s,%s,%s)
+                """,
+                (
+                    ts, symbol, track, side, strategy, "v5.3",
+                    result.get("cvd_fast"), result.get("cvd_mid"), result.get("cvd_day"), result.get("cvd_fast_slope"),
+                    result.get("p95"), result.get("p99"),
+                    result.get("atr_value", result.get("atr")), result.get("atr_pct"),
+                    result.get("oi_delta"), result.get("ls_ratio"), result.get("top_trader_position"),
+                    (f.get("auxiliary") or {}).get("coinbase_premium"),
+                    f.get("obi_raw"), f.get("whale_cvd_ratio"),
+                    score_direction, score_crowding, score_env, score_aux, result.get("score", 0),
+                    gate_passed, block_reason, result.get("price"),
+                )
+            )
+            conn.commit()
+
+
 def save_indicator_1m(ts: int, symbol: str, result: dict):
     bar_ts = (ts // 60000) * 60000
     with get_sync_conn() as conn:
@@ -1328,6 +1384,7 @@ def main():
                 for strategy_cfg, strategy_result in strategy_results:
                     sname = strategy_cfg.get("name", "v51_baseline")
                     save_indicator(now_ms, sym, strategy_result, strategy=sname)
+                    save_feature_event(now_ms, sym, strategy_result, strategy=sname)
 
                 # 1m表仍用primary（图表用）
                 primary_result = strategy_results[0][1]