The invention relates to an inner section removal machine for bamboo. The inner section removal machine comprises a frame and also comprises an inner section removal cutting tool assembly, an axial bamboo feeding mechanism and a radial bamboo positioning mechanism which are fixedly arranged on the frame; the axial bamboo feeding mechanism is corresponding to the inner section removal cutting tool assembly; the radial bamboo positioning mechanism is located on the periphery of the inner section removal cutting tool assembly; the inner section removal cutting tool assembly comprises a cutter shaft, a section breaking cutter, a plurality of scrapers and a plurality of positioning rings; the cutter shaft is driven by a main motor to rotate; the section breaking cutter is arranged at the front end of the cutter shaft; the plurality of scrapers are used for polishing the inner section of the bamboo; the plurality of positioning rings are used for preventing the excessive polishing; the plurality of scrapers and the plurality of positioning rings sleeve the cutter shaft; every positioning ring is arranged between the two corresponding adjacent scrapers. According to the inner section removal machine for the bamboo, the process of the inner section removal of the bamboo is mechanized, the efficiency of the machining link of the inner section removal is improved, and the quality can be effectively guaranteed.