Biomaterials such as artificial bones, joints, and dental implants need to have the following properties, that is biocompatibility and mechanical properties similar to those of a metal. For these biomaterials, titanium and its alloys have been used in modern clinics. Especially, the medical concern with research of the porous titanium used as biomaterials has been growing for the last several years. However, very few attempts have been made at study on cutting properties of porous titanium. The aim of this study is to clarify the cutting properties of the porous titanium by vibration cutting. Surface roughness was stable when the amount of depth of cut is 0.1 mm. For threading processing of porous titanium, it was possible to process without deleting the titanium particle. The young’s modulus was 9.8～20.3 GPa, which is lower than the value for human cortical bone. This is can be adjusted in strength by annealing. We found that can be processed while retaining the characteristics of the porous titanium by vibration cutting.