The invention relates to a dental implant method using a tissue punch, sinus lift drill (SLD) and hydraulic effect which places a bone graft and embed a dental implant at a maxillary sinus area where there is not sufficient bone to embed a dental implant. The method includes: removing mucoperiosteum having a size of an dental implant to be implanted at a alveolar crest area using a tissue punch, drilling a maxillary sinus floor easily and safely without causing damage to a maxillary sinus membrane by inserting a sinus lift drill which has a protruding member that is elastically installed in the body so as to protrude from and retract in the longitudinal direction of the body, elevating a maxillary sinus membrane by the hydraulic effect (injecting graft adjacent to the drilled maxillary sinus floor); and installing the implant in an inside portion of the drilled maxillary sinus floor.