The advances of epoxidation modification of unsaturated rubber by organic peroxyacid method，potassuim monopersulfate compound/acetone method and transition metal catalyst/hydrogen peroxide method were reviewed.The mechanism of epoxidation reaction of unsaturated rubber was analyzed.The advantages and disadvantages of various epoxidation modification methods of unsaturated rubber were outlined.It was pointed out that more attention would be paid to the research of environment-friendly epoxidation modification methods of unsaturated rubber and efficient，low-cost and reusable catalysts et al in the future.
