diff --git a/model/log.go b/model/log.go
index c189e01d..d26da9a2 100644
--- a/model/log.go
+++ b/model/log.go
@@ -8,14 +8,14 @@ import (
 )
 
 type Log struct {
-	Id               int    `json:"id"`
+	Id               int    `json:"id;index:idx_created_at_id,priority:1"`
 	UserId           int    `json:"user_id" gorm:"index"`
-	CreatedAt        int64  `json:"created_at" gorm:"bigint;index"`
-	Type             int    `json:"type" gorm:"index"`
+	CreatedAt        int64  `json:"created_at" gorm:"bigint;index:idx_created_at_id,priority:2;index:idx_created_at_type"`
+	Type             int    `json:"type" gorm:"index:idx_created_at_type"`
 	Content          string `json:"content"`
-	Username         string `json:"username" gorm:"index;default:''"`
+	Username         string `json:"username" gorm:"index:index_username_model_name,priority:2;default:''"`
 	TokenName        string `json:"token_name" gorm:"index;default:''"`
-	ModelName        string `json:"model_name" gorm:"index;default:''"`
+	ModelName        string `json:"model_name" gorm:"index;index:index_username_model_name,priority:1;default:''"`
 	Quota            int    `json:"quota" gorm:"default:0"`
 	PromptTokens     int    `json:"prompt_tokens" gorm:"default:0"`
 	CompletionTokens int    `json:"completion_tokens" gorm:"default:0"`