公共政策制定机制的设计者或治策群体,是知识的提供者和政策的建议者。本文通过对公共治策相关的知识群体的古今演变,梳理出知识群体在公共治策中的作用,并勾勒出现代智库相关的知识群体的特点。研究认为,随着现代知识市场的出现和完善,智库作为特定知识产品的生产者,其治策相比古代在精准性、公正性上有很大提升,但是由于每个智库主体的视角具有封闭性,需要通过完善市场机制构建,才能使治策更为合理。 The designer or policy maker of a public policymaking mechanism is the provider of knowledge and policy advocate. Through the ancient and modern evolution of knowledge groups related to public policy, this paper sort out the role of knowledge groups in public policy and outline the characteristics of modern knowledge-based knowledge groups. The study shows that with the advent and improvement of modern knowledge market, as a producer of specific knowledge products, think tanks have greatly improved their accuracy and fairness compared with the ancient ones. However, because the perspective of each think tank is closed In order to make policy more rational, we need to build a sound market mechanism.