High uric acid in renal failure stage 3 refers to chronic kidney disease stage 3 combined with hyperuricemia, such patients need a low-salt, low-fat, high-quality low-protein diet, and to limit the intake of high purine foods. Low salt: do not eat salty dishes, pickled foods and salty snacks and other high salt foods, this kind of diet will increase the burden on the patient’s kidneys, aggravate edema, and even cause high blood pressure. Low fat: eat less fried, animal fat food, etc. Eating too much high-fat food will increase the gastrointestinal burden, leading to hyperlipidemia, further aggravating the burden on the kidneys. High-quality low-protein diet: low-protein diet can reduce the production of nitrogen-containing metabolites and alleviate symptoms and related complications. Such patients can eat high-quality low-protein foods, such as eggs, milk and lean meat. Limit the intake of high-purine food: these patients need to avoid eating animal offal, seafood, pickled food, etc., not to eat fried food, not to drink beer, carbonated beverages, spinach, soybean products, etc., otherwise it will aggravate the condition. It is recommended that patients with stage III renal failure go to regular hospitals in time and standardize the treatment under the guidance of professional physicians.