Generally infertility patients check semen found azoospermia, it is necessary to consider whether there is a blockage of the vas deferens. Check the vas deferens blockage, the simpler way is to draw blood to check, alpha glycosidase and glycerol fructose, this is a general judgment standard, if suggests that increased, it is possible that the vas deferens blockage. To confirm the diagnosis, you need to do a gentian violet test on the basis of incision, which can be observed to see whether it is open or not, and if it is not open, it can be directly treated by surgery. Vasectomy may be caused by unclean sex or inflammation, etc. It must be detected and treated in time, relax, cooperate with the doctor, and try not to put too much pressure on yourself.