Abstract: Using deresinated montan wax(DMW) of E'shan(ESDMW) from Yunnan province as the material, chroma value (L) as the main index, new oxidation bleaching of DMW were developed. The bleaching effects of three kinds of oxidation systems, i.e., peroxide (H2O2), peracetic acid (CH3COOOH) and H2O2/CH3COOOH system, were investigated. The results showed that H2O2/CH3COOOH system was better than the single systems of H2O2 and CH3COOOH. The main process parameters in H2O2/CH3COOOH system was optimized using the response surface method. The optimal conditions were m(CH3COOOH):m(ESDMW) 20:1, m(H2O2):m(ESDMW) 36.7:1, time 80 min and temperature 118.5 ℃. Under these conditions, the L value of the product was 62.02, which was almost consistent with the model prediction. The joint use of H2O2/CH3COOOH system with the Cr6+ was explored. The results showed that the bleaching effect of the joint use of Cr6++CH3COOOH/H2O2 was better than any other methods used before. More importantly, under the premise of better bleaching effect, the dosage of Cr6+ was significantly reduced by the optimized process.