The risk of wound pain, wound reopening and infection generally exists after defecation after a tear in normal labor, in order to avoid the above risks, the mother defecation need to pay attention to overcome psychological pressure, the use of bidet, maintain good defecation habits, active prevention of infection, etc. 1, overcome psychological pressure: due to wound tears, there may be pain during defecation, at this time should overcome fear, bear the pain of defecation, or often refuse to defecate patience 2, the use of the toilet: lacerations after defecation device is best to choose sitting stool, do not choose squatting stool. Squatting is likely to lead to wound pain, and in serious cases will lead to poor wound healing, the risk of re-occurrence of wound dehiscence; 3, maintain good bowel habits: 1-2 times a day defecation, do not force too much when defecating. If there is dry stool, defecation difficulties and other phenomena, you can use the appropriate amount of open cork, to help soften the stool and promote defecation; 4, active prevention of infection: each time after defecation to pay attention to washing the vulva, keep the vulva clean, to avoid stool pollution lacerated wound. Take a sitz bath with potassium permanganate to prevent wound infection. Lacerations need to be sutured when they are serious, and particularly serious need to do repair surgery. Usually, you can massage your abdomen more often to promote bowel movement and thus relieve constipation. Develop good eating habits, try to choose an easily digestible diet, such as millet porridge, egg custard, fish soup, etc. Do not eat too much meat to avoid causing dry stools. Usually drink more water to increase the water in the intestines, keep the stool loose and soft, and avoid the pressure on the perineum when defecating.