Abstract: Objective: To explore the diagnosis and treatment of torsion of testicular appendage so as to improve the level of treatment.Methods: The clinical data,including the onset,treatment and prognosis of 16 cases of torsion of testicular appendage were reviewed.The age of the patients ranged from 13-42 years.Results: Eleven cases had left side torsion of testicular appendage and 5 cases the right side.The elapse of time from onset to definite diagnosis was 2 h-8 d.The diagnosis of torsion of testicular appendage in 15 cases was based on color Doppler flow imaging(CDFI) and 1 case was verified by operation.All the 16 cases underwent acute operation.Twelve cases of testicles were removed for necrosis,and only 4 cases of testicles were salvaged by operative detorsion.Conclusions: Early diagnosis of torsion of testicular appendage is very important,and CDFI is reliable for diagnosis of torsion of testicular appendage.Immediately operation after admission is essential for salvage of the testicle.