Dr. Zheng is engaged in clinic, teaching and scientific research after graduating from Shanghai First Medical School. His major subject is andrology and he has taken standardized training of andrology physician, and also he has finished master course of American sexology. Hence Dr. Zheng is unique unparalleled for urologic surgery in Shanghai. Dr. Zheng is accomplished in sexual dysfunction, prostate diseases, male infertility and the treatment of venereal diseases.