diff --git a/tushare/src/api.py b/tushare/src/api.py
index 5a33c2c..ad92415 100644
--- a/tushare/src/api.py
+++ b/tushare/src/api.py
@@ -102,7 +102,7 @@ def list_scores(
 
 
 @app.get("/api/v1/scores/{score_id}")
-def get_score(score_id: int):
+def get_score(score_id: str):
     conn = storage._get_conn()
     try:
         with conn.cursor() as cur:
diff --git a/tushare/src/storage.py b/tushare/src/storage.py
index 0b10e66..1fb2435 100644
--- a/tushare/src/storage.py
+++ b/tushare/src/storage.py
@@ -38,7 +38,7 @@ def init_db(db_url: str = DEFAULT_DB_URL):
             """)
             cur.execute("""
                 CREATE TABLE IF NOT EXISTS scores (
-                    id          INTEGER GENERATED ALWAYS AS IDENTITY PRIMARY KEY,
+                    id          UUID DEFAULT gen_random_uuid_v7() PRIMARY KEY,
                     ts_code     TEXT NOT NULL,
                     trade_date  TEXT NOT NULL,
                     close       REAL,
diff --git a/web/backend/internal/handlers/scores.go b/web/backend/internal/handlers/scores.go
index 60a0933..4b562d3 100644
--- a/web/backend/internal/handlers/scores.go
+++ b/web/backend/internal/handlers/scores.go
@@ -32,12 +32,7 @@ func (d *Deps) ListScores(w http.ResponseWriter, r *http.Request) {
 }
 
 func (d *Deps) GetScore(w http.ResponseWriter, r *http.Request) {
-	idStr := chi.URLParam(r, "id")
-	id, err := strconv.ParseInt(idStr, 10, 64)
-	if err != nil {
-		writeErr(w, http.StatusBadRequest, "invalid id")
-		return
-	}
+	id := chi.URLParam(r, "id")
 	row, err := d.Futures.GetScore(id)
 	if err != nil {
 		writeErr(w, http.StatusNotFound, err.Error())
diff --git a/web/backend/internal/store/futures.go b/web/backend/internal/store/futures.go
index 3059da2..9a1c16a 100644
--- a/web/backend/internal/store/futures.go
+++ b/web/backend/internal/store/futures.go
@@ -29,7 +29,7 @@ func OpenFutures(databaseURL string) (*FuturesStore, error) {
 func (s *FuturesStore) Close() error { return s.db.Close() }
 
 type Score struct {
-	ID         int64           `json:"id"`
+	ID         string          `json:"id"`
 	TsCode     string          `json:"ts_code"`
 	TradeDate  string          `json:"trade_date"`
 	Close      float64         `json:"close"`
@@ -91,7 +91,7 @@ func (s *FuturesStore) ListScores(f ScoreFilter) ([]Score, error) {
 	return out, rows.Err()
 }
 
-func (s *FuturesStore) GetScore(id int64) (*Score, error) {
+func (s *FuturesStore) GetScore(id string) (*Score, error) {
 	row := s.db.QueryRow(`SELECT id, ts_code, trade_date, close, oi, oi_chg, short_term, medium_term,
 		long_term, composite, signal, detail_json, created_at FROM scores WHERE id = ?`, id)
 	var x Score