Abstract: A sugarcane leaf shattering and returning machine which adopted profiling pick-up device was designed to make it possible that the gap between flail knife and furrow is larger than the ridge height. The machine quite satisfactorily solved the problem that the flail knife of sugarcane leaf shattering and returning machine could not pick up the sugarcane leaf from the bottom of furrow. Field tests indicated that the fuel consumption per unit of time was lowered by 7%, pick-up rate was increased by 4%, shattering rate was improved by 11%, and the leaf length after being shattered was shortened from 25 cm to 20 cm, which basically met sugarcane leaf’s shattering quality standards and agronomic requirements. At the same time, theoretical analysis and field tests on such key components as profiling pick-up device, knife-roller, and flail knife were conducted to determine their structures and key parameters.