The bleaching mechanisms of both peracetic acid and hydrogen peroxide and their auxiliaries selections are introduced. Meanwhile,general situation of the researches of combined bleaching of peracetic acid and hydrogen peroxide is elaborated from four aspects: the complementary properties,practical application,the optimization conditions and the joint application with other environment- friendly bleach. Last but not least,the application prospect of combining bleaching of peracetic acid and hydrogen peroxide as green bleaching agent in other fields,especially in lignite wax,is outlooked.