In order to create a law-based business environment,continue to expand the positive effects of the reform,improve the government's ability to refine oversight,and avoid"one-size-fits-all"in law enforcement,local governments have focused on the concerns of enterprises and launched a series of innovative policies to reduce the burden on market players,which are both flexible and flexible.It is found that the diffusion of penalty policy in the field of market regulation is the result of the comprehensive action of"inspiring group-agglomeration region-governance goal-policy network-incentive mechanism".In the field of market supervision,there are three stages for the spread of the policy of exemption from penalty:the initial exploration stage in two places,the national replication and promotion stage,and the law enforcement stage;The spatial dimension presents the characteristics of regional agglomeration and adjacent diffusion.The policy of free punishment spreads through two paths of"bottom-up"promotion and"top-down"implementation;Imitation,learning and competition mechanisms play a significant role in the process.