The economic analysis has become familiar in today’s criminal law research. This article，on the basis of the studies of the meaning and status of the economic analysis in criminal law and the explanations of its basic themes，aims and theoretical presumptions，successively studies the applications of the economic analysis in the fields of philosophy of criminal law，criminal law dogmatic，criminal policy science and criminal procedure law，and hopes that by doing these，it can arouse criminal law academic community to attach importance to this problem.