Abstract: Objective：To summarize the value of color Doppler in diagnosis of acute testicular torsion and testicular torsion in children.Methods：Observe the two-dimensional ultrasound imaging and RI and spectrum changes of 26 cases of testicular torsion and 7 cases of appendage torsion, and compare with the operation;analyzed the diagnosis and differential diagnosis features.Results：The imaging features of testicular forsion were obvicus decrease or disappearance of blood flow and enhanced echo of cordlike mass in the upper testicle. There was RI and spectrum change.The imaging features of appendage torsion were low echo of unsmooth mass, appearing round or round-like, and there were enlargement of testicle and increased colored blood flow signals.Conclusion：Color Doppler has a high diagnostic rate of early diagnosis of acute testicular torsion and torsion of testicular appendages, which can guide the early treatment for incomplete testicular torsion.

Key words: Testicular torsion, Color Doppler, Ultrasonography, Children