Azoospermia can be divided into two main categories: obstructive and non-obstructive. In the past, IVF was often the treatment of choice for obstructive azoospermia. The development of microsurgical techniques for male infertility has resulted in more treatment options for patients. When making treatment decisions, both patients and specialists should thoroughly evaluate and consider the fertility status of the patient-couple in order to make an optimal treatment choice. First of all, what are the advantages of male vasectomy reversal surgery? 1. Patients get the chance to conceive naturally; 2. Avoid women suffering from treatment damage; 3. Treatment cost is significantly lower than IVF. Which patients are suitable for vas deferens surgery? 1.Bilateral vasectomy patients; 2.Epididymitis causing obstruction in the epididymis area, or no clear cause, but clearly diagnosed as obstruction in the epididymis area; 3.Hiatal hernia surgery accidentally injuring the vas deferens; 4.Ejaculatory cysts blocking the opening of the ejaculatory ducts.