With the increasing development of mobile rich media applications, it has become an important research topic on how to reduce application response time so as to run more smoothly on resource-limited devices. On the basis of the in-depth study of character drawing mode, cache replacement policy and full use of the cache resources, this paper presents a strategy to cache the characters of mobile rich media pages. The detailed structure, replacement strategies, etc. of this caching strategy are also discussed. Theoretical analysis and simulation data show that the strategy can effectively reduce application’s response time, bringing users more smooth experiences.