The　paper　argues　that　auto　exhaust　catalysts　should　be　recycled　to　the　whole　industry　chain　as　it＇s　the　important　part　of　the　auto.　After　examining　the　current　situation　of　scraped　automobile　catalysts　in　china,　the　article　thinks　that　the　recycling　can　not　only　contribute　to　environmental　protection,　also　can　resolve　the　current　contradiction　of　rare　material　resources　supplying　gap　in　China.　Especially　when　we　improved　the　recycling　efficiency　of　scrapped　auto　exhaust　purifying　catalysts,　can　environment　get　a　great　improvement.　Then　the　paper　considers　a　static　and　single-cycle　recycling　model　contains　three　outlets,　calculates　the　cost-benefit　function,　and　gives　one　general　decision-making　process　with　two-dimensional　linear　programming　under　fuzzy　parameters.