Circular economy has become an important strategic choice in meeting the obligatory targets for energy conservation and emission reduction and building up a resource-saving and environmental friendly society in China.It is also a major scheme of planning environmental impact assessment.Aiming at solving existing problem of circular economy analysis used in PEIA,a theoretical model of circular economy analysis was set up to analyze its key components and technical procedures.Based on the model,an evaluation index system combined with quantitative analysis and qualitative analysis was also established.In order to testify the efficacy and feasibility of the model,it was applied to PEIA of Odors City,Inner Mongonia leading industries and key regional planning.Rationality of former plan was assessed from a point view of circular economy and optimization was made accordingly.Specific suggestions were given for environment management in implement of the plan.