Abstract: Mobile internet gets greater attention from society recently, for enterprises to establish advanced position in such rapidly developing market, the integration of smart terminal, network and application is critical. Smart terminal enriches the cloud computing based application service manifestations, which offeres a large number of online cloud services. As a result, the mobile internet cloud service providers are focusing on the integration of smart terminal and cloud based applications. This paper analyzes the mainstream of smart terminal cloud computing application models, specifically a virtualization technology based on SaaS cloud computing architecture, and the new requirements for virtualization cloud application platform in the trend of diversity of smart terminal, explain with practical experience, the key technologies of application virtualization adapted to smart terminal.