The reform and opening up policy makes Chinese economy increase rapidly,which leads to Chinese society having a huge transformation.In the meantime,more and more rural migrant workers remove countryside to city working as builders,categorised,waiters and drivers in city.They work with city laborers together changing China into the world factory and make a great contribution to Chinese economy increasing rapidly.However,this huge group of workers faces amount of problems,such as  be lacking of injured repayments and children entering school difficulty and the rest.