Some of the azoospermia caused by vasectomy can be cured by surgical treatment, but not all of them, according to the comprehensive consideration of the condition and surgical situation. Azoospermia caused by blocked vas deferens is usually called obstructive azoospermia. Currently, the main treatment for obstructive azoospermia is to lift the obstruction through microscopic vas deferens epididymal anastomosis, which has a higher recanalization rate, shorter operation time, and fewer postoperative complications, but the requirements for the operator are higher. If the blockage is caused by the narrowing of the intestinal segment of the vas deferens or the pelvic segment of the vas deferens, it will be very difficult to cure, and assisted reproduction technology is recommended if you want to achieve the goal of fertility. It is recommended that you consult with your doctor to determine what type of treatment you should use and whether or not it is possible to cure the blockage.