diff --git a/backend/sql/08_trade.sql b/backend/sql/08_trade.sql
index 063ad22..bdfeae5 100644
--- a/backend/sql/08_trade.sql
+++ b/backend/sql/08_trade.sql
@@ -52,9 +52,9 @@ BEGIN
         CREATE TABLE open_date (
             id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
             trade_id UUID NOT NULL,
-            year int NOT NULL DEFAULT 0,
-            month int NOT NULL DEFAULT 0,
-            day int NOT NULL DEFAULT 0,
+            year INT NOT NULL DEFAULT 0,
+            month INT NOT NULL DEFAULT 0,
+            day INT NOT NULL DEFAULT 0,
             deleted BOOLEAN NOT NULL DEFAULT FALSE,
             created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
             updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
@@ -103,6 +103,24 @@ BEGIN
     ELSE
         RAISE NOTICE '5️⃣⏩ direction 子表已存在，跳过';
     END IF;
+
+    -- open_price 子表
+    IF NOT EXISTS (SELECT 1 FROM information_schema.tables WHERE table_name = 'trade_open_price') THEN
+        CREATE TABLE open_price (
+            id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
+            trade_id UUID NOT NULL,
+            open_price NUMERIC(10,2) NOT NULL CHECK (open_price >= 0.00) DEFAULT 0.00,
+            deleted BOOLEAN NOT NULL DEFAULT FALSE,
+            created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+            updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
+        );
+        CREATE TRIGGER update_open_price_updated_at
+            BEFORE UPDATE ON open_price
+            FOR EACH ROW EXECUTE FUNCTION update_data_modified_column();
+        RAISE NOTICE '6️⃣✅ open_price 子表已创建';
+    ELSE
+        RAISE NOTICE '6️⃣⏩ open_price 子表已存在，跳过';
+    END IF;
 END $$;
 
 -- 4️⃣ 视图 ------------------------------------
@@ -115,12 +133,14 @@ SELECT
     od.month AS open_month,
     od.day AS open_day,
     v.variety_name AS variety_name,
-    d.direction AS direction
+    d.direction AS direction,
+    op.open_price AS open_price
 FROM trade t
 LEFT JOIN remark r ON t.id = r.trade_id AND r.deleted = FALSE
 LEFT JOIN open_date od ON t.id = od.trade_id AND od.deleted = FALSE
 LEFT JOIN variety v ON t.id = v.trade_id AND v.deleted = FALSE
 LEFT JOIN direction d ON t.id = d.trade_id AND d.deleted = FALSE
+LEFT JOIN open_price op ON t.id = op.trade_id AND op.deleted = FALSE
 WHERE t.deleted = FALSE;
 
 RAISE NOTICE '4️⃣✅ trade_info_view 已创建/更新';
diff --git a/backend/提示词条.md b/backend/提示词条.md
index 85e9ccf..358eeea 100644
--- a/backend/提示词条.md
+++ b/backend/提示词条.md
@@ -48,4 +48,12 @@ direction VARCHAR NOT NULL,
 deleted BOOLEAN NOT NULL DEFAULT FALSE,
 created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
 updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
+---
+读取./sql/08_trade.sql，然后多加一个子表，子表名叫trade_open_price，子表逻辑字段为:
+id UUID DEFAULT gen_random_uuid() PRIMARY KEY，
+trade_id UUID NOT NULL,
+open_price numeric(10,2) NOT NULL CHECK (price >= 0.00) DEFAULT 0.00,
+deleted BOOLEAN NOT NULL DEFAULT FALSE,
+created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
+updated_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
 ---
\ No newline at end of file