Abstract: This review gives a wide scope on the use of ion exchange resins as catalysts in organic synthesis，such as acylation，alkylation，esterification，etherification，aldolisation，isomerisation and oligomerisation，epoxidation and ring-opening of epoxides. Compared with inorganic catalysts，the exchange resin as catalysts shows excellent catalytic performance and could be readily recycled. The prospect of application of ion exchange resins as catalyst is discussed.