This review focuses on the research progress on new type adsorbent for olefin/paraffin in separating alkene in twenty years.Compared with the tradition adsorption via pi-complexation,the adsorption mechanism of the adsorbent for preferential adsorption of olefin is pore size,difference in molecular diffusion,hydrogen bond interaction or pi complexation in separation of olefin/paraffin.This kind of adsorbent includes metallo-organic frameworks,Engelhard Titanosilicate(ETS),mesoporous molecular sieve and high...