What comes out of a man after a ligation is generally referred to as seminal plasma. After a man has a vasectomy, the vas deferens is ligated with silk threads, and the sperm that is produced at this time tends to pool in the epididymis. Even after the ligation surgery, there is a fluid that is discharged during sex, which is seminal plasma, and because there are no sperm in it, it acts as a contraceptive. Men within a month after the ligation, or to do a good job of contraception, because just after the operation, there will be part of the sperm stored in the distal vas deferens or seminal vesicles, although the number of sperm as well as the vitality of the sperm is significantly reduced, but it can not be completely excluded will not lead to female pregnancy. In the early stage of the operation, do not carry out early water infiltration and bathing, in order to prevent blood seepage from the surgical area, resulting in hematoma occurs. Men need proper bed rest after ligation, not to do strenuous exercise, bearing in mind that men after ligation has a certain risk of not being able to dredge, it is recommended to go to a regular hospital for surgery, if discomfort occurs, it is recommended that the patient timely follow-up.