diff --git a/sysmodule/mangomodule/mongomodule.go b/sysmodule/mangomodule/mongomodule.go
new file mode 100644
index 0000000..a12eaba
--- /dev/null
+++ b/sysmodule/mangomodule/mongomodule.go
@@ -0,0 +1,129 @@
+package mangomodule
+
+import (
+	"github.com/duanhf2012/origin/log"
+	"gopkg.in/mgo.v2"
+	"gopkg.in/mgo.v2/bson"
+	"sync"
+	"time"
+
+	_ "gopkg.in/mgo.v2"
+)
+
+// session
+type Session struct {
+	*mgo.Session
+}
+
+type DialContext struct {
+	sync.Mutex
+	sessions []*Session
+	sessionNum uint32
+	takeSessionIdx uint32
+}
+
+type MangoModule struct {
+	dailContext *DialContext
+}
+
+func (slf *MangoModule) Init(url string,sessionNum uint32,dialTimeout time.Duration, timeout time.Duration) error {
+	var err error
+	slf.dailContext, err = dialWithTimeout(url, sessionNum, dialTimeout*time.Second, timeout*time.Minute)
+
+	return err
+}
+
+
+func (slf *MangoModule) Take() *Session{
+	return slf.dailContext.Take()
+}
+
+// goroutine safe
+func dialWithTimeout(url string, sessionNum uint32, dialTimeout time.Duration, timeout time.Duration) (*DialContext, error) {
+	if sessionNum <= 0 {
+		sessionNum = 100
+		log.Release("invalid sessionNum, reset to %v", sessionNum)
+	}
+
+	s, err := mgo.DialWithTimeout(url, dialTimeout)
+	if err != nil {
+		return nil, err
+	}
+	s.SetSyncTimeout(timeout)
+	s.SetSocketTimeout(timeout)
+
+	c := new(DialContext)
+
+	// sessions
+	c.sessions = make([]*Session, sessionNum)
+	c.sessions[0] = &Session{s}
+	for i:=uint32(1) ;i< sessionNum;i++{
+		c.sessions[i] = &Session{s.New()}
+	}
+
+	c.sessionNum = sessionNum
+
+	return c, nil
+}
+
+// goroutine safe
+func (c *DialContext) Close() {
+	c.Lock()
+	for _, s := range c.sessions {
+		s.Close()
+	}
+	c.Unlock()
+}
+
+func (c *DialContext) Take()*Session{
+	c.Lock()
+	idx := c.takeSessionIdx %c.sessionNum
+	c.takeSessionIdx++
+	c.Unlock()
+
+	return c.sessions[idx]
+}
+
+// goroutine safe
+func (s *Session) EnsureCounter(db string, collection string, id string) error {
+	err := s.DB(db).C(collection).Insert(bson.M{
+		"_id": id,
+		"seq": 0,
+	})
+	if mgo.IsDup(err) {
+		return nil
+	} else {
+		return err
+	}
+}
+
+// goroutine safe
+func (s *Session) NextSeq(db string, collection string, id string) (int, error) {
+	var res struct {
+		Seq int
+	}
+	_, err := s.DB(db).C(collection).FindId(id).Apply(mgo.Change{
+		Update:    bson.M{"$inc": bson.M{"seq": 1}},
+		ReturnNew: true,
+	}, &res)
+
+	return res.Seq, err
+}
+
+// goroutine safe
+func (s *Session) EnsureIndex(db string, collection string, key []string) error {
+	return s.DB(db).C(collection).EnsureIndex(mgo.Index{
+		Key:    key,
+		Unique: false,
+		Sparse: true,
+	})
+}
+
+// goroutine safe
+func (s *Session) EnsureUniqueIndex(db string, collection string, key []string) error {
+	return s.DB(db).C(collection).EnsureIndex(mgo.Index{
+		Key:    key,
+		Unique: true,
+		Sparse: true,
+	})
+}
diff --git a/sysmodule/mangomodule/mongomodule_test.go b/sysmodule/mangomodule/mongomodule_test.go
new file mode 100644
index 0000000..4f2251f
--- /dev/null
+++ b/sysmodule/mangomodule/mongomodule_test.go
@@ -0,0 +1,75 @@
+package mangomodule
+
+import (
+	"fmt"
+	_ "gopkg.in/mgo.v2"
+	"gopkg.in/mgo.v2/bson"
+	"testing"
+	"time"
+)
+
+type Student struct {
+	ID    bson.ObjectId `bson:"_id"`
+	Name   string  `bson: "name"`
+	Age    int     `bson: "age"`
+	Sid    string  `bson: "sid"`
+	Status int     `bson: "status"`
+}
+
+func Test_Example(t *testing.T) {
+	module:=MangoModule{}
+	module.Init("127.0.0.1",100, 5*time.Second,5*time.Second)
+
+	// take session
+	s := module.Take()
+	c := s.DB("test2").C("t_student")
+
+	//2.定义对象
+	insertData := Student{
+		ID:bson.NewObjectId(),
+		Name:   "seeta11",
+		Age:    35, //*^_^*
+		Sid:    "s20180907",
+		Status: 1,
+	}
+
+	updateData := Student{
+		Name:   "seeta11",
+		Age:    18,
+		Sid:    "s20180907",
+		Status: 1,
+	}
+
+	//3.插入数据
+	err := c.Insert(&insertData)
+
+	//4.查找数据
+	selector := bson.M{"_id":bson.ObjectIdHex("5f25303e999c622d361989b0")}
+	m:=Student{}
+	err = c.Find(selector).One(&m)
+
+	//5.更新数据
+	//selector2 := bson.M{"_id":bson.ObjectIdHex("5f25303e999c622d361989b0")}
+	updateData.ID = bson.ObjectIdHex("5f25303e999c622d361989b0")
+	err = c.UpdateId(bson.ObjectIdHex("5f25303e999c622d361989b0"),&updateData)
+	if err != nil {
+		fmt.Print(err)
+	}
+
+	//6.删除数据
+	err = c.RemoveId(bson.ObjectIdHex("5f252f09999c622d36198951"))
+	if err != nil {
+		fmt.Print(err)
+	}
+
+	//序号自增
+	s.EnsureCounter("test2","t_student","5f252f09999c622d36198951")
+	for i := 0; i < 3; i++ {
+		id, err := s.NextSeq("test2", "t_student", "5f252f09999c622d36198951")
+		if err != nil {
+			fmt.Println(err)
+			return
+		}
+		fmt.Println(id)
+	}
+}