1, avoid eating spicy stimulating food avoid drinking alcohol. Chili, alcohol on the rectal mucosa has a direct stimulating effect, excessive eating will cause rectal mucosa congestion, expansion and formation of hemorrhoids. Chili and alcohol will also stimulate the anal valve and anal sinus, causing local inflammation and lead to sinusitis, anal papillitis, perianal abscess and other diseases. 2, avoid eating fat, sweet, thick flavor, roasted food. Fat, sweet and thick taste is very easy to cause constipation, long-term constipation is an important cause of anorectal disease. There are reports, Europe and the United States and other countries every 100,000 people in 42.2 people suffering from colorectal malignancy, these people are different degrees of defecation interval extension, discharge difficulties. 3, avoid high fat, high protein, low fiber diet. It is generally believed that high-fat, high protein, low-fiber diet, can make the intestinal bile fluid and anaerobic bacteria increase, while the intestinal anaerobic Clostridium difficile can be deoxycholic acid into a malignant substance 3-methyl anthracene. In addition, some components of high-fat foods may be broken down into unsaturated cholesterol in the intestines, which has a malignant effect. Cold food is very easy to cause diarrhea, diarrhea is also the cause of anorectal disease. 4, the prevention of anorectal disease should also eat more vegetables and fruits. The benefits of eating more vegetables and fruits is that they contain a lot of cellulose, when the cellulose through the digestive tract can absorb water to make themselves expand, expanding cellulose on the one hand, through its distended volume to stimulate and strengthen the gastrointestinal peristalsis, so that the digestion, absorption and excretion function to strengthen on the other hand, you can also be the food can not be digested in certain components, digestive secretions, intestinal bacteria and body metabolism in the production of harmful substances are wrapped up to form Harmful substances are wrapped up to form feces, thus making feces smooth and easy to travel, not only to reduce the incidence of hemorrhoids, but also to prevent malignant changes.