Some mothers like to eat mutton, dog meat, ginger soup and other hot and spicy food, long time do not eat or rarely eat vegetables, fruits, coupled with maternal bed rest, reduced activity, intestinal peristalsis slowed down, so that the stool in the intestinal tract stay too long, water is absorbed and too dry, hard, defecation is difficult. In addition, postpartum abdominal muscle relaxation, pelvic pressure suddenly reduced, rectal retardation is also easy to make stool retention, thus constipation occurs. Once constipation occurs, if forced to defecate, it is easy to cause anal fissures. The way to prevent anal fissures is to: get up and move around as early as possible after giving birth. The first time you get up, you can do light activities, such as leg lifts, sit-ups, anal retraction, etc. This is good for strengthening the rectus abdominis muscle, exercising the pelvic muscles, helping defecation and restoring health. In addition to nutritious meat in maternity recipes, you should eat more fresh vegetables and fruits to increase the volume of stool. Eat less or no hot, spicy food, eat more fish soup, pig’s feet soup, to help lubricate the intestines and replenish enough water to prevent constipation. Constipation treatment methods are many: 1, liquid paraffin 30 ml, once served, after taking in the morning, defecation in the afternoon; 2, Du secret gram 1 packet, 6-8 hours after serving can defecate; 3, one open plug, inserted into the anus to squeeze the drug into the rectum, 10-20 minutes to defecate. In short, to prevent constipation is the key to prevent postpartum anal fissure. Once constipation occurs, it should be treated promptly and forced defecation should be avoided.