The hazards of male ligation mainly include bleeding and infection, and the sequelae mainly include epididymal stasis. 1. Bleeding: clinically, some men may have spermatic cord hematoma, scrotal hematoma and other bleeding conditions within 24 hours after ligation, which may cause local swelling and pain. 2. Infection: If you don’t pay attention to strengthen the care of the incision after the surgery, it may cause the infection of the incision, resulting in local redness, swelling and hot pain. 3. Epididymal stasis: after ligation, semen cannot pass through the vas deferens and stagnates in the epididymis, which may lead to epididymal stasis, and may also cause localized redness, swelling and pain. Men should strengthen the care of their body after ligation. If any discomfort occurs, they should go to the hospital in time.