diff --git a/config/config.go b/config/config.go
index d5840b7..4739b2c 100644
--- a/config/config.go
+++ b/config/config.go
@@ -14,6 +14,7 @@ var configFilePath = "config.yaml"
 
 type ConfigOptions struct {
 	Domain      string   `json:"domain" yaml:"domain"`
+	DatabaseUrl string   `json:"database_url" yaml:"database_url"`
 	CFEmail     string   `json:"cf_email" yaml:"cf_email"`
 	CFKey       string   `json:"cf_key" yaml:"cf_key"`
 	SourceFiles []string `json:"source-files" yaml:"source-files"`
diff --git a/config/config.yaml b/config/config.yaml
index 03ad74b..16ca9cd 100644
--- a/config/config.yaml
+++ b/config/config.yaml
@@ -1,6 +1,9 @@
 # your domain
 domain: example.com
 
+# database url
+database_url: ""
+
 # cloudflare api
 cf_email: ""
 cf_key: ""
diff --git a/internal/database/db.go b/internal/database/db.go
index 9cbaf11..3c5ad6c 100644
--- a/internal/database/db.go
+++ b/internal/database/db.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"os"
 
+	"github.com/zu1k/proxypool/config"
+
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"
 )
@@ -12,6 +14,9 @@ var DB *gorm.DB
 
 func connect() (err error) {
 	dsn := "user=proxypool password=proxypool dbname=proxypool port=5432 sslmode=disable TimeZone=Asia/Shanghai"
+	if url := config.Config.DatabaseUrl; url != "" {
+		dsn = url
+	}
 	if url := os.Getenv("DATABASE_URL"); url != "" {
 		dsn = url
 	}