diff --git a/lib/options/options_db.py b/lib/options/options_db.py
index 77b5c28..9eaf86a 100644
--- a/lib/options/options_db.py
+++ b/lib/options/options_db.py
@@ -148,6 +148,27 @@ def sum_open_premium_paid(conn: sqlite3.Connection, inst_id: str) -> float | Non
     return round(float(row["total"] or 0), 8)
 
 
+def sum_open_budget_usdt(conn: sqlite3.Connection, inst_id: str) -> float | None:
+    """同合约 open 腿开仓预算/兑换占用 USDT 合计(权利金折 U 展示用,不随币价变)."""
+    inst = (inst_id or "").strip()
+    if not inst:
+        return None
+    row = conn.execute(
+        """
+        SELECT SUM(budget_usdt) AS total, COUNT(*) AS n
+        FROM options_trades
+        WHERE inst_id = ? AND status = 'open' AND budget_usdt IS NOT NULL
+        """,
+        (inst,),
+    ).fetchone()
+    if not row or int(row["n"] or 0) < 1:
+        return None
+    try:
+        return round(float(row["total"] or 0), 4)
+    except (TypeError, ValueError):
+        return None
+
+
 def sum_open_sheets(conn: sqlite3.Connection, inst_id: str) -> int | None:
     """同合约所有 open 腿张数合计."""
     inst = (inst_id or "").strip()
diff --git a/lib/options/options_positions_lib.py b/lib/options/options_positions_lib.py
index 2602854..ddab544 100644
--- a/lib/options/options_positions_lib.py
+++ b/lib/options/options_positions_lib.py
@@ -140,7 +140,14 @@ def display_pnl_usdt_from_option_row(row: dict[str, Any]) -> float | None:
 
 
 def premium_paid_usdt_from_option_row(row: dict[str, Any]) -> float | None:
-    """开仓权利金折 USDT:币本位 × 指数;USDC 原样."""
+    """开仓权利金折 USDT.
+
+    优先用开仓时兑换/预算占用的 budget_usdt(不随币价浮动);
+    否则 USDC 原样;币本位无预算记录时才回退 × 当前指数.
+    """
+    entry = _safe_float(row.get("premium_entry_usdt") or row.get("budget_usdt"))
+    if entry is not None:
+        return round(float(entry), 4)
     paid = _safe_float(row.get("premium_paid"))
     if paid is None:
         return None
@@ -207,6 +214,8 @@ def build_display_option_positions(
     raw_positions: list[dict[str, Any]],
 ) -> list[dict[str, Any]]:
     """与实例 /api/options/positions 相同 enrichment + close_preview."""
+    from lib.options.options_db import init_options_tables, sum_open_budget_usdt, sum_open_premium_paid
+
     meta_cache: dict[str, dict[str, Any] | None] = {}
     rows: list[dict[str, Any]] = []
     conn = cfg["get_db"]()
@@ -215,6 +224,7 @@ def build_display_option_positions(
         for p in raw_positions:
             inst = str(p.get("instId") or "").strip()
             premium_override = sum_open_premium_paid(conn, inst) if inst else None
+            budget_usdt = sum_open_budget_usdt(conn, inst) if inst else None
             row = enrich_position_row_display(
                 cfg,
                 ex,
@@ -222,6 +232,9 @@ def build_display_option_positions(
                 meta_cache=meta_cache,
                 premium_override=premium_override,
             )
+            if budget_usdt is not None:
+                row["budget_usdt"] = round(float(budget_usdt), 4)
+                row["premium_entry_usdt"] = round(float(budget_usdt), 4)
             attach_close_preview(cfg, ex, row, premium_paid=_safe_float(row.get("premium_paid")))
             rows.append(row)
     finally: