diff --git a/code/rest/matter_chunk_dao.go b/code/rest/matter_chunk_dao.go
new file mode 100644
index 0000000..83d32b9
--- /dev/null
+++ b/code/rest/matter_chunk_dao.go
@@ -0,0 +1,14 @@
+package rest
+
+type MatterChunkDao struct {
+	BaseDao
+}
+
+func (this *MatterChunkDao) Init() {
+	this.BaseDao.Init()
+}
+
+// 通过md5值来查找记录
+func (this *MatterChunkDao) FindByMd5(uuid string) *MatterChunk {
+
+}
diff --git a/code/rest/matter_chunk_model.go b/code/rest/matter_chunk_model.go
new file mode 100644
index 0000000..ee8217d
--- /dev/null
+++ b/code/rest/matter_chunk_model.go
@@ -0,0 +1,32 @@
+package rest
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/eyebluecn/tank/code/core"
+)
+
+type MatterChunk struct {
+	Uuid       string    `json:"uuid" gorm:"type:char(36);primary_key;unique"`
+	Sort       int64     `json:"sort" gorm:"type:bigint(20) not null"`
+	UpdateTime time.Time `json:"updateTime" gorm:"type:timestamp not null;default:CURRENT_TIMESTAMP"`
+	CreateTime time.Time `json:"createTime" gorm:"type:timestamp not null;default:'2018-01-01 00:00:00'"`
+	UserUuid   string    `json:"userUuid" gorm:"type:char(36);index:idx_matter_uu"`
+	Username   string    `json:"username" gorm:"type:varchar(45) not null"`
+	Md5        string    `json:"md5" gorm:"type:varchar(45)"`
+	Index      string    `json:"sort" gorm:"type:bigint(20) not null"`
+}
+
+// get matterChunk's absolute path. the Path property is relative path in db.
+func (this *MatterChunk) AbsolutePath() string {
+	return GetUserMatterChunkDir(this.Username)
+}
+
+//get user's matterChunk absolute path
+func GetUserMatterChunkDir(username string) (rootDirPath string) {
+	// FIXME dirPath
+	dirPath := fmt.Sprintf("%s/%s/%s", core.CONFIG.MatterPath(), username, MATTER_ROOT)
+
+	return dirPath
+}