diff --git a/big.go b/big.go
index 7743cdc..148bb24 100644
--- a/big.go
+++ b/big.go
@@ -7,16 +7,23 @@ import (
 	"time"
 )
 
+// BigConfig 配置
+type BigConfig struct {
+	DefaultExpiration time.Duration // 默认过期时间
+}
+
 // Big https://github.com/allegro/bigcache
 type Big struct {
-	db         *bigcache.BigCache // 驱动
-	expiration time.Duration      // 默认过期时间
+	BigConfig
+	db *bigcache.BigCache // 驱动
 }
 
 // NewBig 实例化
-func NewBig(expiration time.Duration) *Big {
-	c, _ := bigcache.NewBigCache(bigcache.DefaultConfig(expiration))
-	return &Big{db: c, expiration: expiration}
+func NewBig(config *BigConfig) *Big {
+	b := &Big{}
+	b.DefaultExpiration = config.DefaultExpiration
+	b.db, _ = bigcache.NewBigCache(bigcache.DefaultConfig(b.DefaultExpiration))
+	return b
 }
 
 // Set 插入数据 将只显示给定结构的导出字段 序列化并存储
diff --git a/big_cache.go b/big_cache.go
index aca0609..b8f1765 100644
--- a/big_cache.go
+++ b/big_cache.go
@@ -10,7 +10,7 @@ type BigCache struct {
 	GetterInterface GttInterfaceFunc // 不存在的操作
 }
 
-// NewCache 实例化
+// NewCache 实例化组件
 func (b *Big) NewCache() *BigCache {
 	return &BigCache{db: b}
 }
diff --git a/big_test.go b/big_test.go
index b621b35..bf92eae 100644
--- a/big_test.go
+++ b/big_test.go
@@ -5,31 +5,38 @@ import (
 	"time"
 )
 
+func logBig() *Big {
+	return NewBig(&BigConfig{
+		DefaultExpiration: time.Minute * 30,
+	})
+}
+
 func TestBig(t *testing.T) {
 
-	newCache := NewBig(time.Minute * 30)
+	newCache := logBig()
 
-	// 字符串
-	newCache.Set("key1", "测试Big插入数据 1")
+	// 设置字符串
+	t.Logf("设置字符串：%+v", newCache.Set("key1", "测试Big插入数据 1"))
 	key1, _ := newCache.Get("key1")
-	t.Logf("key1：%+v", key1)
+	t.Logf("读取字符串：%+v", key1)
 
-	// 结构体
+	// 设置结构体
 	type name struct {
 		Test string `json:"test"`
 	}
-	newCache.Set("key2", name{"测试Big插入数据 2"})
+	t.Logf("设置结构体：%+v", newCache.Set("key2", name{"测试Big插入数据 2"}))
 	key2, _ := newCache.Get("key2")
-	t.Logf("key2：%+v", key2)
-	t.Logf("key2：%+v", key2.(name))
+	t.Logf("读取结构体：%+v", key2)
+	t.Logf("读取结构体结果：%+v", key2.(name))
 
 	// 缓存组件
 	newCacheCache := newCache.NewCache()
 	newCacheCache.GetterInterface = func() interface{} {
 		return name{"测试Big插入数据 3"}
 	}
+	//key3Result := &name{}
 	key3 := newCacheCache.GetInterface("key3")
-	t.Logf("key3：%+v", key3)
-	t.Logf("key3：%+v", key3.(name))
+	t.Logf("读取缓存组件：%T", key3)
+	t.Logf("读取缓存组件：%+v", key3.(name))
 
 }