POE-g-( MAH/St) was prepared by melt grafting poly( ethylene/octene)( POE) with maleic anhydride( MAH) and styrene( St) in a torque rheometer,and was used as compatibilizer in polypropylene/sugarcane bagasse composites. The effect of POE-g-( MAH/St) dosage on the mechanical and flow properties of the composites were discussed. Grafting ratio test and FTIR analysis show that maleic anhydride and styrene has successfully grafted onto POE. SEM indicate that POE-g-( MAH/St) can improve the dispersion uniformity...