Abstract: Police functions may be divided into the two types ofservice and law reinforcement.The diversification of society determines that the main body of supplies of police should also be diversified.For the police,the core function of law reinforcement is irreplaceable,while what can be replaced is the margin function to provide protective work,which should be provided by market.This requires that the government should loosen the restriction to companies of security service and technical prevention and marketlize service-oriented police affairs,so that the need of different consumer groups could be met.

Key words: service-oriented police, public administration, diversifiedgovernance