After pregnancy, due to the reduction of stomach acid, physical activity, gastrointestinal peristalsis slow, coupled with the fetus squeeze intestinal part, intestinal muscle weakness, often appear intestinal flatulence and constipation phenomenon. The constipation can make the fecal block compress the intestinal wall vein and make the blood flow back poorly, and the force of defecation causes the abdominal pressure to increase, resulting in the expansion of the hemorrhoidal vein and the formation of hemorrhoids. In order to prevent constipation and hemorrhoids, pregnant women should eat vegetables, fruits and coarse grains rich in crude fiber (such as spinach, carrots, potatoes, pears, bananas, plums, black bread, oatmeal, etc.) to stimulate the intestinal wall, so that intestinal peristalsis accelerated. If necessary, agar can be added to promote intestinal peristalsis. Coarse grains are rich in dietary fiber and rich in VB1. If VB1 is not enough, it can affect the nerve conduction to slow down gastrointestinal motility, which is not conducive to the digestion, absorption and excretion of food. Eat more gas-producing foods, such as raw onion, garlic, honey, lactose, etc., using their fermentation in the intestinal tract, through the production of gas drum intestine, to increase intestinal peristalsis, conducive to defecation. Can appropriate more oil and fat food, fat has moderate intestinal peristaltic hyperactivity and slippery intestinal role, such as butter, soybean oil, olive oil, sesame oil, multi-fat animal meat. Mobile paraffin wax early in the morning to take a food spoon, can relieve constipation, but when necessary available, so as not to form a dependence, drink a cup of yogurt daily, can enhance digestive function. Meat foods decompose slowly, accumulate in the stomach and intestines to slow intestinal peristalsis, and even deteriorate, producing indole, so it should be used sparingly Mustard, pepper, ginger, peel, etc. are irritating and easy to cause gastrointestinal mucositis, so it should be reduced or avoided.