Nowadays, wireless and mobile devices not only change people’s lives but also the demarcation line of web service applications. The mobile is a device for jobs, entertainment and personal computation. The purpose of the current research is to apply interactive theory for exploring and designing an interactive cross platform for mobile devices, PCs, and tablet PCs in robots. It is further tested with two contents, an E-book and a flash game to evaluate its performance. A user-friendly interface is designed with open source software. In the future, the cross platform system will be further developed for education, engineering, and other appliances.