One step implant structure for implant surgery includes: a body part with a first external thread, which is a coarse thread.A connecting part formed above the body part, which is an arc-shaped ring body concave in the middle.A abutment part formed above the connecting part is internally provided with an internal thread, which is a tapered ring body with a narrow outer end and a wide inner end.A second external thread is arranged between the body part and the connecting part, and the second external thread is a fine thread.The internal thread of abutment part is screwed with the screw of artificial denture to improve the connection stability of abutment part and artificial denture.一種植牙手術之一階式植體構造,其包括:一設有第一外螺紋之本體部,該第一外螺紋係為粗螺紋。一成型於本體部上方之連結部,該連結部係為中間凹設之弧形環體。一成型於連結部上方之支台部,該支台部內部設一內螺紋,係為外端窄、內端寬之錐環體。其中,本體部與連結部之間設有第二外螺紋,該第二外螺紋係為細螺紋。藉由支台部內部之內螺紋與人工假牙內部之螺桿對應螺合,可增進支台部與人工假牙之連結穩固性。