In order to obtain the complete lanterns litchi pulp and improve the postpartum processing quality and commodity value of litchi, a kind of litchi denucleating and decorticating machine was designed based on physical characteristics of litchi and flexible denucleating cutter. The machine integrated functions of automatic directing, denucleating and decorticating, as well as separating. The pulp integrity rate and juice loss rate after denucleating and decorticating were investigated under different working conditions. The results showed that the directional success rate was over 90%, while the diameter of directional roller was 72mm, the gap between roller was 2mm, and the rotational speed was 93r/min, as well as the longitudinal diameter was 1.3mm longer than the equivalent diameter of litchi. When the inner diameter of cutter was 10mm, the distance between denucleating cutter edge and the top of litchi was 2mm, and the cutter shaft speed was 12r/min, the denucleating success rate was 80%. Meanwhile, when the feeding hole spacing was 16mm, the discharging hole spacing was 20mm, and the decorticating roller angle was 0°, as well as the spindle speed was 15r/min, the decorticating success rate was 100%, and the integrity rate of lanterns litchi pulp was more than 80%. The results provided a reference for expanding the processing and utilization way of litchi, and showed that the developed denucleating and decorticating equipment could be industrialized and widespreaded.