The invention discloses a working method of a sugarcane end cutting and cleaning device. The sugarcane end cutting and cleaning device comprises an end cutting mechanism used for cutting off two endsof a workpiece, a material moving mechanism and a cleaning mechanism, and the material moving mechanism is located between the end cutting mechanism and the cleaning mechanism; the end cutting mechanism comprises a supporting bracket, an end cutting assembly and a limiting assembly, the end cutting assembly comprises a first cutting assembly and a second cutting assembly which are symmetrically arranged, and the limiting assembly is located between the first cutting assembly and the second cutting assembly; and the cleaning mechanism comprises a support frame, a rotating assembly and a cleaning assembly, and the cleaning assembly is located beside the rotating assembly. The working method has the beneficial effects that the head and the tail of sugarcane can be removed through the end cutting mechanism, and therefore manpower input is reduced; the material moving mechanism can automatically move the sugarcane obtained after end cutting to the cleaning mechanism, therefore, the manual feeding step is omitted, and the working efficiency is improved; in addition, decontaminating and cleaning operation can be conducted on the sugarcane through the cleaning mechanism, and therefore thelabor intensity of workers is reduced.