The invention discloses a sugarcane processing method. A sugarcane processing device is adopted and comprises a feeding device, a peeling device, a cutoff device and a separation device. The feeding device, the peeling device and the cutoff device are sequentially arranged in the first direction. The sugarcane processing method comprises the steps that the cutoff device cuts off peeled sugarcane and sugarcane peel, and the cutoff sugarcane and the sugarcane peel are received by the separating device, so that the sugarcane and the sugarcane peel are separated. According to the sugarcane processing method, the special sugarcane processing device is adopted, and the feeding device, the peeling device, the cutoff device and the separation device are matched, the sugarcane is peeled, and the sugarcane peeling operation safety and the peeling efficiency can be improved.