The drum flaker is aft ideal machine for making flakes in particleboard production, and the drum is a keypart. In this article, the main types of drums and the structure characteristics of the hyperboloidal drum were introduced. The design parameters of hyperbololidal drum and its dead knife, the driving power, productive capacity as well as selection and calculation of some cutting parameters were studied. According to the examination results of Model BX444 drum flaker, the design calculation methods stated by the article were verified.