In the recent years,the study on collision orogenic belts has greatly advanced.The foundation of classification of collision orogenic belts is founded. Sengor (1992) proposed a triple classification, but it can not cover all collis ion orogenic belts.In this paper a new classification on basis of units that take part in the collision is put forward. The units include plate,microplate,frontarc,remnant arc and accretion arc. The collision orogens can be classified into continent-continent, continent-frontarc, continent-remnant arc, continent-accretion arc, arc-arc and continent-arc-continent types.In the light of collision orogenic belts in the world,the continent-continent type is veryrare. The refore,the Wilson cycle is seldom seen at present and in geological history and most collision orogens are non-Wilson cycle type.The classification is not unique one,the other classification could be founded based on the intriorstructures or collision processes,if the geological data is plenty. However, these imformations are not enough for the classification,so the classification developed in this paper is very useful one at present.