diff --git a/infra/logger/mongo.go b/infra/logger/mongo.go
index 9db2b8e..71a5004 100644
--- a/infra/logger/mongo.go
+++ b/infra/logger/mongo.go
@@ -5,14 +5,21 @@ import (
 	"fmt"
 	"go.mongodb.org/mongo-driver/mongo"
 	"go.mongodb.org/mongo-driver/mongo/options"
+	"strconv"
 	"time"
 )
 
 var (
-	collection *mongo.Collection
+	collectionMap map[string]*mongo.Collection
 )
 
 func NewMongoDriver(config db, level int) (driver, error) {
+	if collectionMap == nil {
+		collectionMap = make(map[string]*mongo.Collection)
+	}
+	var collection *mongo.Collection
+	mKey := config.Host + strconv.Itoa(config.Port) + config.Database + config.Table
+	collection = collectionMap[mKey]
 	if collection == nil {
 		ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
 		client, err := mongo.Connect(ctx, options.Client().ApplyURI(fmt.Sprintf("mongodb://%s:%d", config.Host, config.Port)))
@@ -24,7 +31,9 @@ func NewMongoDriver(config db, level int) (driver, error) {
 			return nil, err
 		}
 		collection = client.Database(config.Database).Collection(config.Table)
+		collectionMap[mKey] = collection
 	}
+
 	return &mongoLogger{
 		level:      level,
 		collection: collection,