This paper comes up with a mode of development to build a mobile application with Web technology, together with its meaning. Based on this kind of mode, using MUI and HTML5+, we could build a cross-platform mobile sports competition platform. At last, to verify the feasibility and advantage of this mode of development, we package and deploy the application to run on mobile devices such as ios, Android System and pad. Since Web technology has become highly developed, this mode of development will be the focus and used more and more widely.