The way to prevent anal fissures is to get up and move around as early as possible after delivery. When you get up for the first time, you can do some light activities, such as leg lifting, sit-ups and anal retraction, which are good for strengthening abdominal muscles, exercising pelvic muscles, helping defecation and restoring health. In addition to nutritious food, maternal recipes should include more fresh vegetables and fruits to increase stool capacity; eat less or no hot, spicy food, and eat more fish soup and pig’s feet soup to help lubricate the intestines and replenish enough water to prevent constipation. There are many treatments for constipation: 1, paraffin oil 30 ml, taken once, after taking in the morning, you can defecate in the afternoon. 2, phenolphthalein 100 mg, 6 to 8 hours after taking can be defecated. 3, one open plug, inserted into the anus to squeeze the drug into the rectum, 10 ~ 20 minutes to defecate. In short, to prevent postpartum constipation is the key to prevent postpartum anal fissure. Once constipation occurs, it should be treated promptly and forced defecation should be avoided.