Cholesterol crystals themselves are cholesterol secreted by the gallbladder due to a change in solubility, the cholesterol content in the bile exceeds the ability of bile acids and phospholipids to dissolve cholesterol, some of the cholesterol in the bile cannot be dissolved in the bile, and cholesterol crystals precipitate and precipitate. Generally, the amount is small and can be discharged through circulation. Large amounts tend to form gallstones. Once crystals are found in the gallbladder, the gallbladder ultrasound should be reviewed regularly, and once gallbladder stones or gallbladder polyps occur, minimally invasive laparoscopic surgery should be performed as soon as possible. As for doing minimally invasive gallbladder stone extraction or minimally invasive cholecystectomy, it varies from person to person. Normally, we should pay attention to a reasonable diet: “seven to” and “five to”. Seven to: First, eat more foods containing vitamin A, such as green vegetables, carrots, tomatoes, cabbage, etc. Usually, you should eat more bananas, apples and other fruits. Second, we should use vegetable oil frying, the dishes eaten to stew, braised, steamed. Third, we should always eat lean meat, chicken, fish, walnuts, black fungus, kelp, nori, etc. Fourth, we should eat more food that can promote bile secretion and relax the bile duct posterior muscles, bilious role of food such as hawthorn, umeboshi, corn husk (make tea and drink slowly). Five to eat breakfast, not fasting for too long. Six to exercise regularly to prevent constipation. Seven to lose weight. Five taboos: one taboo high cholesterol food, such as animal heart, liver, brain, intestines, as well as egg yolk, muffin eggs, caviar and chocolate. Two avoid high-fat foods, such as fatty meat, lard, fried food, oil cakes should not eat more, because too much fat causes gallbladder contraction, resulting in pain. Third, avoid eating and drinking during holidays or gatherings of friends and relatives. Because overeating will promote the secretion of bile in large quantities, and the strong contraction of the gallbladder will cause inflammation of the gallbladder, local colic and so on. Four avoid eating spicy and stimulating condiments, such as chili, pepper, etc. Five avoid smoking, alcohol, coffee, etc., these irritating food will make too much stomach acid, the gallbladder violent contraction and lead to the bile duct mouth sphincter spasm, bile discharge difficulties, easy to induce biliary colic.