The well-known software company, Google,announced a new handset platform named Android on 5 November 2007, which makes a dramatic impact on the mobile platform market. Later, Open Handset Alliance (OHA) continues to develop Android platform, and to date, the mobile development platform has become the most popular one. However, how to save the power and extend the waiting time are important issues to both academic and industrial communities. Currently, there are few intelligent programs developed to save the power at the Android Market, and these programs are usually short of some functions. Moreover,the Android SDK provides no setting functions to adjust the CPU state. So this paper studies and develops several kernel programs. The targets of our programs are to not only monitor common-use programs on the background, but also dynamically adjust the CPU frequency on the platform according to application programs on executing.Several interfaces are provided such that users can manually adjust the mode and frequency of CPU, view the statistic information, and so on. Furthermore, we also collect many settings of saving the power into our program, which makes users straightforward and easy to manipulate.