A dental implant is made of a mono metal body from inside to outermost surface of the implant, and the implant surface has macro pores having an inner diameter with the level of several tens of μm, micro pores having an inner diameter of 1 to 2 μm, and nano discharge craters having an inner diameter with the level of several tens of nm. A surface treatment method of the implant includes steps of producing macro pores having an inner diameter with the level of several tens of μm by blast processing, producing micro pores having an inner diameter of 1 to 2 μm by acid treatment, and producing nano discharge craters having an inner diameter with the level of several tens of nm by anodic oxidation treatment.
