Provided is an implant fixture.The fixture includes a first area portion including a plurality of first screw portions configured to correspond to a cortical bone during implantation in a bone tissue and have a first ridge portion and a first bottom portion which are formed to have a spiral shape and alternately disposed in a direction of a central axis, and a plurality of non-screw portions provided between adjacent first screw portions and including a continuous surface having a smaller radius at a terminal end of a first screw portion of one side than a radius of the first bottom portion with respect to the central axis, wherein the radius gradually increases toward a beginning end of a first screw portion of another side, and a second area portion positioned below the first area portion and configured to correspond to a cancellous bone of the bone tissue during the implantation in the bone tissue.