Public service motivation refers to public service belief，value and attitude of the individuals based on public institution and culture which reveals the altruistic motivation beyond the self-interest motivation.The relationship between public service motivation and incentive is reflected from the responses by public service personnels to the incentive items and the incentive of public sector and public services.That effective motivation to public service motivation needs to strengthen the intrinsic incentive，lay stress on extrinsic incentive，and improve the influence of public institution and culture.