Diet and nutrition treatment should be given according to different types. Develop the habit of regular bowel movement, avoid taking laxatives and enemas frequently, and increase physical activity appropriately. 1, spastic constipation 1, no coarse fiber low residue diet: first eat low residue semi-liquid diet, abstain from vegetables and fruits, and then change to low residue soft food. 2, appropriate increase in fat, fat laxative, fatty acids promote intestinal peristalsis, conducive to defecation; but not too much. 3, drink more water: drink water and beverages to keep the water in the intestinal stool to facilitate laxation, such as drinking honey water in the morning. 4.Eating powder products: powder absorbs water in the intestine, making the stool soft and slippery, which is conducive to excretion. 5, prohibit the consumption of stimulating food: prohibit the consumption of wine, strong tea, coffee, chili, curry and other stimulating food. Second, obstructive constipation If caused by organic lesions, the disease should first be treated to remove the cause; such as rectal cancer, colon cancer, etc.. If it is incomplete obstruction, consider giving clear liquid. Diet is limited to providing partial caloric energy and minimum control of food residues, with extra-gastrointestinal nutrition as the main way to supply caloric energy. Third, incompetent constipation 1, containing coarse fiber diet: supply more coarse fiber food to stimulate the intestinal tract, promote gastrointestinal peristalsis, enhance the ability to defecate. Such as coarse grains, fruits with skin, fresh vegetables, etc. 2, drink more water: drink more water and beverages, so that the intestinal tract to maintain sufficient water, conducive to fecal discharge. 3, supply B vitamins: eat more food rich in B vitamins, can promote the secretion of digestive juices, maintain and promote intestinal peristalsis, conducive to defecation. Such as coarse grains, yeast, beans and their products, etc. 4, eat more gas-producing food: eat more gas-producing food, promote intestinal peristalsis to speed up, conducive to defecation; such as onions, radish, garlic, etc. 5, high fat: appropriate to increase the high-fat food, vegetable oils can directly laxative, and decomposition products fatty acids have a stimulating effect on intestinal peristalsis. Such as peanuts, sesame, walnuts and peanut oil, sesame oil, soybean oil, etc., the total daily fat up to lOOg. supply laxative food, such as foreign powder and its products, silver ear soup, etc. 6, dietary contraindications: avoid alcohol and tobacco, and spicy food, because these foods are not conducive to laxative.