Non-linear and Linear Multiple Objective Fuzzy Assessment Models for the Cleaner Production Li Guiqi Zhou Hemin Liu Yanxia Doctor Student,Dept.of Metallurgical Sci.& Eng.,Central South Univeristy,Changsha 410083,China.Combing with the Analytical Hierarchy Process (AHP), non linear and liner multiple objective fuzzy assessment models for the cleaner production are presented. The models are applied in the cleaner production for the iron and steel and the results indicate that the decisions could be made on the two models.cleaner production; AHP; fuzzy evaluation; non linear model; linear model