Huang xx,female ,17years old,Idiopathic recurvate deformity,before operation cervical deformity is obvions,neck pain,rise difficulty,walk unstable,casing tumbie:After admission,the patient received cranial bow-ring traction,when the deformity got better,the patient had a peration of posterior sorew-rod orthopedic fixation.After operation cervical physiological tordosis recovered,neck pain and walking unstably and so on disappeared.