With more and more attention paid to eco- industrialpark( EIP) 'sustainable development,how to evaluate EIP'sustainable development becomes very essential. Based on the literature reviews and interviews of managers in some EIPs,this paper identified three- level indicators of EIP's sustainable development by using factor analysis. And the weights of each indicator on EIP's sustainable development were calculated according to the percentage of factors and component score coefficients. The indicator system of evaluating EIP's sustainable development was constructed according to the three- level indicators and their weights on,which would provide theoretical and practical guidance to evaluate EIP's sustainable development.