In studying the thought of "three representatives",Mao Zedong thought shows a new political meaning by directing the open and the reform policy with modern development of China. To study Mao Zedong is no end to learning,in which his creative thought of overall planning and all-round consideration,of class analysis and of constructing the Party inwardly,all of significant enlightenment. Mao Zedong thought is continuously developing in fulfillment,so we need to study continuously.