我们对2例桡骨下端骨巨细胞瘤应用瘤段截除，游离腓骨小头移植来重建桡腕关节，即彻底清除了肿瘤，又保留了部分腕关节功能，取得了良好的效果。认为7cm以内的腓骨小头移植治疗桡骨下端骨巨细胞瘤不需要做吻合血管的骨移植，这样手术方法简单，易行，也可用于外伤引起的桡骨下端骨缺损。 We used 2 tumor segments of the lower humerus giant cell tumor to remove the free radial bone graft to reconstruct the wrist joint, which completely cleared the tumor and retained some of the wrist joint function, and achieved good results. It is considered that the treatment of the giant bone cell tumor of the lower humerus with a radial head transplantation within 7 cm does not require bone grafting for vascular anastomosis. This method is simple and easy to perform and can also be used for traumatic lower humerus bone defects.