It introduces a mobile U disk which took the place of the traditional ones. Based on humanization， the mobile U disk is compared with the traditional U disk， as well as traditional mobile phone U disk shape and creative one shape. It designed a mobile phone U disk could be used on a mobile phone. It will surpass the traditional ones in the use of convenience and hand feel，which is the inheritance and innovation of the traditional ones. Let the consumers read information in the use of mobile phones U disk， at the same time realize the convenience and superiority which the mobile U disk bring to consumers.