Objective To summarize the etiological composition of azoospermia patients by integrating the genitals color doppler ultrasonography,the levels of sex hormones(TSH,LH,E2,T,PRL)and the results of chromosome examination.Methods Seventy-five patients with azoospermia received in The First Affiliated Hospital of Hunan University of Traditional Chinese Medicine were divided into obstructive and non-obstructive azoospermia according to whether the vas deferens were unobstructed during January 2015 to October 2017,with collecting data as color doppler ultrasound of reproductive system,sex hormone lev...