With the improvement of people’s economic standard of living, the table of every family is getting richer and richer, and the number of people suffering from fatty liver is also increasing. There are three main types of fatty liver: obese fatty liver, alcoholic fatty liver, and diabetic fatty liver. Mild fatty liver may not have any discomfort, while moderate or severe fatty liver usually has symptoms such as loss of appetite, fatigue, nausea and vomiting, bloating, diarrhea, vague pain in the liver area, and soreness and swelling of the left shoulder and back. The danger of fatty liver is that some patients can develop steatohepatitis and liver fibrosis, and even lead to cirrhosis. To prevent fatty liver, it is necessary to remove the causes of fatty liver, such as treating diabetes, abstaining from alcohol, limiting high-fat diets, losing weight and changing poor lifestyles. To prevent fatty liver, it is necessary to correct bad dietary habits, once three meals should be regular and quantitative, to avoid over-eating, snacking, late-night snacking and other bad habits, avoid eating sucrose, fructose. Prevent fatty liver should be high protein diet, daily intake of protein to 80 to 100 grams is appropriate. Common foods that can better supplement protein are tofu, bean curd, lean meat, fish, shrimp and so on. Prevention of fatty liver should limit salt, moderate drinking water, daily salt to 6 grams of salt, and moderate drinking water, to promote the body’s metabolism and excretion of metabolic waste is favorable. In addition, the prevention of fatty liver should also eat silkworm chrysalis, hawthorn, lotus leaf, turtle, beans, leeks, eggplant, squash, amaranth, mustard greens, carrots, grapes and duck and pears and other foods, which have the effect of preventing the elevation of liver fat or cholesterol. Foods rich in methyl sulfur amino acids, such as millet, oat noodles, sesame seeds, spinach, cauliflower, beet, dried scallops, tamarind, etc., can promote the synthesis of phospholipids in the body, assisting in the transformation of fat in the liver cells, which is beneficial to the prevention of fatty liver. Lipid-lowering foods such as oats, corn, kelp, garlic, onions, sweet potatoes, milk, apples, mushrooms, cauliflower, sunflower seeds, figs, lemons and so on should be eaten often.