Abstract: Environmental governance policy is a key dimension to the analysis and grasp of the process of environmental governance.In the past 40 years,a number of valuable achievements have emerged in the research of environmental governance policies in domestic academic circles.The evolution of environmental governance policy in China can be observed through literature metrology and its visualization method.It is found that with the help of clustering atlas of high frequency keywords,the research path of domestic environmental governance policy can be divided into two types:tool paradigm and process paradigm.And with the help of thematic time zone map,the evolution law of environmental governance policy in China can be summarized into three aspects:policy change synchronizing with the transformation of environmental governance model,policy evaluation synchronizing with the effectiveness of environmental governance,and the policy subject synchronizing with the environmental governance participation subject.At the same time,there are still some deficiencies in the current policy of environmental governance in our country,for example,paying too much attention to the choice of policy tools and avoiding the value of the policy itself,and the lack of supervision of the policy which leads to a large number of deviant behaviors in policy implementation.Therefore,the choice of scientific and reasonable environmental governance policy tools and the strengthening of environmental governance policy supervision should be the way to optimize the environmental governance policy system.

Key words: environmental governance policy, research path, evolution law, literature metrology