Abstract:Early years of the 21st Century is period of meet for three lang cycles that world economy,international politics and science together enter into a new development cycle,with science as the core problem of the world in the new century.China which has begun a period of innovations in science and technology,must understand the quasi-cycle regularity,seize the opportunities for developing economy,reply the challenges from hegemonism politic,and create the future linking tradition,so to make contributions to the development of science of the world.