objective To investigate the clinical effcacy of transposition of distal radial periosteal flap for treatment of scaphoid nonunion. Methods Transposition of distal radial periosteal flap were underwent in 21 patient of nonunion of scaphoid, the wrist joint function was evaluated with modified Mayo score system before and after operation. Results The therapeutic time were from 6 to 19 months, the good rate of the effect was 95.2%. The wrist joint function was different statistically before and after treated(P＜0.01). Conclusion Transposition of distal radial periosteal flap is effecive and satisfactory for treating nonunion of scaphoid.