The concepts of pavement preventive maintenance, pavement preservation and pavement preservation system are introduced in this paper, and the very important roles of preventive maintenance are discussed in pavement preservation system.

We have developed a practical maintenance interface of mobile telephone platform using VC~(++) language,which calls the corresponding conversion tools to complete the picture or ring data transformation,and realize the replacement of the picture or ring by calling the search and replacement sub function,and eventually realize the individuation of the r.