diff --git a/backend/app/model/base.go b/backend/app/model/base.go
new file mode 100644
index 000000000..fd9d09b3a
--- /dev/null
+++ b/backend/app/model/base.go
@@ -0,0 +1,9 @@
+package model
+
+import "time"
+
+type BaseModel struct {
+	ID        uint `gorm:"primarykey"`
+	CreatedAt time.Time
+	UpdatedAt time.Time
+}
diff --git a/backend/app/model/command.go b/backend/app/model/command.go
index 4f7864914..482ca9e28 100644
--- a/backend/app/model/command.go
+++ b/backend/app/model/command.go
@@ -1,9 +1,7 @@
 package model
 
-import "gorm.io/gorm"
-
 type Command struct {
-	gorm.Model
+	BaseModel
 	Name    string `gorm:"type:varchar(64);unique;not null" json:"name"`
 	Command string `gorm:"type:varchar(256);not null" json:"command"`
 }
diff --git a/backend/app/model/group.go b/backend/app/model/group.go
index 46d53c48a..8a9fe00b1 100644
--- a/backend/app/model/group.go
+++ b/backend/app/model/group.go
@@ -1,9 +1,7 @@
 package model
 
-import "gorm.io/gorm"
-
 type Group struct {
-	gorm.Model
+	BaseModel
 	Name string `gorm:"type:varchar(64);not null" json:"name"`
 	Type string `gorm:"type:varchar(16);not null" json:"type"`
 }
diff --git a/backend/app/model/host.go b/backend/app/model/host.go
index 4b813135d..39d5e90c3 100644
--- a/backend/app/model/host.go
+++ b/backend/app/model/host.go
@@ -1,9 +1,7 @@
 package model
 
-import "gorm.io/gorm"
-
 type Host struct {
-	gorm.Model
+	BaseModel
 	GroupBelong string `gorm:"type:varchar(64);not null" json:"groupBelong"`
 	Name        string `gorm:"type:varchar(64);unique;not null" json:"name"`
 	Addr        string `gorm:"type:varchar(16);unique;not null" json:"addr"`
diff --git a/backend/app/model/operate_log.go b/backend/app/model/operate_log.go
index ae48fa347..7683b8a4f 100644
--- a/backend/app/model/operate_log.go
+++ b/backend/app/model/operate_log.go
@@ -2,12 +2,10 @@ package model
 
 import (
 	"time"
-
-	"gorm.io/gorm"
 )
 
 type OperationLog struct {
-	gorm.Model
+	BaseModel
 	Group  string `gorm:"type:varchar(64)" json:"group"`
 	Source string `gorm:"type:varchar(64)" json:"source"`
 	Action string `gorm:"type:varchar(64)" json:"action"`
diff --git a/backend/init/migration/migrations/init.go b/backend/init/migration/migrations/init.go
index defaf0ca5..88fd8cb71 100644
--- a/backend/init/migration/migrations/init.go
+++ b/backend/init/migration/migrations/init.go
@@ -15,7 +15,7 @@ var InitTable = &gormigrate.Migration{
 }
 
 var user = model.User{
-	Name: "admin", Email: "admin@fit2cloud.com", Password: "Calong@2015",
+	Name: "admin", Email: "admin@fit2cloud.com", Password: "5WYEZ4XcitdomVvAyimt9WwJwBJJSbTTHncZoqyOraQ=",
 }
 
 var AddData = &gormigrate.Migration{
@@ -44,6 +44,12 @@ var AddTableHost = &gormigrate.Migration{
 		if err := tx.AutoMigrate(&model.Command{}); err != nil {
 			return err
 		}
+		group := model.Group{
+			Name: "default", Type: "host",
+		}
+		if err := tx.Create(&group).Error; err != nil {
+			return err
+		}
 		return nil
 	},
 }