diff --git a/src/modules/system/domain/user_department.go b/src/modules/system/domain/user_department.go
new file mode 100644
index 0000000..0956534
--- /dev/null
+++ b/src/modules/system/domain/user_department.go
@@ -0,0 +1,13 @@
+package domain
+
+import "github.com/jinzhu/gorm"
+
+type UserDepartment struct {
+	gorm.Model
+	UserId       uint `gorm:"not null"`
+	DepartmentId uint `gorm:"not null"`
+}
+
+func (UserDepartment) TableName() string {
+	return "system_user_department"
+}