diff --git a/backend/internal/handler/admin/account_handler.go b/backend/internal/handler/admin/account_handler.go
index bfa46de05b..eb9c370d7f 100644
--- a/backend/internal/handler/admin/account_handler.go
+++ b/backend/internal/handler/admin/account_handler.go
@@ -8,7 +8,6 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
-	"log/slog"
 	"net/http"
 	"strconv"
 	"strings"
@@ -370,19 +369,7 @@ func (h *AccountHandler) List(c *gin.Context) {
 			}
 		}
 		if len(accountGroups) > 0 {
-			var affinityErr error
-			affinityClients, affinityErr = h.gatewayCache.GetAccountAffinityClientsBatch(c.Request.Context(), accountGroups, service.ClientAffinityTTL)
-			if affinityErr != nil {
-				slog.Error("GetAccountAffinityClientsBatch failed",
-					"error", affinityErr,
-					"account_count", len(accountGroups),
-				)
-			} else {
-				slog.Info("GetAccountAffinityClientsBatch success",
-					"account_count", len(accountGroups),
-					"result_count", len(affinityClients),
-				)
-			}
+			affinityClients, _ = h.gatewayCache.GetAccountAffinityClientsBatch(c.Request.Context(), accountGroups, service.ClientAffinityTTL)
 		}
 	}
 
diff --git a/backend/internal/repository/gateway_cache.go b/backend/internal/repository/gateway_cache.go
index a226e7e435..8aca561ae2 100644
--- a/backend/internal/repository/gateway_cache.go
+++ b/backend/internal/repository/gateway_cache.go
@@ -41,6 +41,16 @@ func NewGatewayCache(rdb *redis.Client) service.GatewayCache {
 	return &gatewayCache{rdb: rdb}
 }
 
+// ensureScriptLoaded 确保 Lua 脚本已加载到 Redis 服务器的脚本缓存中。
+// Pipeline 中的 Script.Run 只发送 EVALSHA，如果 Redis 重启过导致脚本缓存丢失，
+// EVALSHA 会返回 NOSCRIPT 错误。此方法提前加载脚本以避免该问题。
+func ensureScriptLoaded(ctx context.Context, rdb *redis.Client, script *redis.Script) {
+	exists, err := script.Exists(ctx, rdb).Result()
+	if err != nil || len(exists) == 0 || !exists[0] {
+		_ = script.Load(ctx, rdb).Err()
+	}
+}
+
 // buildSessionKey 构建 session key，包含 groupID 实现分组隔离
 // 格式: sticky_session:{groupID}:{sessionHash}
 func buildSessionKey(groupID int64, sessionHash string) string {
@@ -125,6 +135,8 @@ func (c *gatewayCache) GetAccountAffinityCountBatch(ctx context.Context, groupID
 	now := time.Now().Unix()
 	expireThreshold := now - int64(ttl.Seconds())
 
+	ensureScriptLoaded(ctx, c.rdb, getAffinityCountScript)
+
 	pipe := c.rdb.Pipeline()
 	cmds := make([]*redis.Cmd, len(accountIDs))
 	for i, accID := range accountIDs {
@@ -166,6 +178,8 @@ func (c *gatewayCache) GetAccountAffinityClientsBatch(ctx context.Context, accou
 		}
 	}
 
+	ensureScriptLoaded(ctx, c.rdb, getAffinityClientsScript)
+
 	pipe := c.rdb.Pipeline()
 	cmds := make([]*redis.Cmd, len(queries))
 	for i, q := range queries {