Through orthogonal test,the best composition of color protection liquid of chestnut(Castanea mollissima Blume) canned was found: added 0.3% citric acid,0.2% Vc,0.1% EDTA solution,0.1% NaCl.The best color protection temperature was 40℃.Sixteen different species of chestnut canned were assessed comprehensively by using the method of fuzzy mathematics,the species which suitable most for processing to be chestnut canned were selected: Yanguang,Yanjin,Zaofeng,Da1-3 and Yankui.