Abstract: With the development of computer science and communication technologies, Computing patterns are changing. This thesis studies pervasive computing environment and traditional application models. On the research basis, we put forward an appropriate application model according to the characteristics in this new environment. Then we research the key element of the model -service gateway. At last, we adopt this model in the iHome project raised by SVA-IBM joint Lab. It proved its practicability. The proposition of pervasive application model is in the person ’of humanity. It provides a solution to the problems in pervasive computing and is a guide to the continued development of pervasive applications.