Uric acid is divided into blood uric acid and uric acid. the normal range of uric acid is usually in the range of 1.5-4.4 mmol/24h. the normal value of blood uric acid is 149-416 μmol/L for men and 89-357 μmol/L for women. the normal value may increase with age, but it is usually not higher than 500 μmol/L. uric acid 518 μmol/L usually refers to blood uric acid, which It is a condition in which blood uric acid is elevated. If the patient has only elevated blood uric acid, it is usually not serious, if the patient is accompanied by other diseases, it is usually more serious.1. Not serious: If only blood uric acid is elevated without other diseases or complications, it is usually not a serious condition. For people without diabetes, hypertension, gout, cardiovascular disease and chronic kidney disease, blood uric acid 518μmol/L usually does not affect the patient’s life and generally After diet adjustment, it can be restored to normal level; 2. More serious: If blood uric acid 518μmol/L is also accompanied by other diseases, in most cases, it will aggravate the condition of other diseases, and the two affect each other, which is not conducive to the treatment and control of the disease, it is a more serious situation, and usually requires drug treatment. When blood uric acid is elevated, urate may precipitate crystals and deposit in the joints, causing gouty arthritis and joint deformation, which may aggravate the existing joint lesions. If deposited in the kidneys, it usually causes gouty nephropathy, uric acid stones, and even uremia, which can increase the burden on the kidneys and be detrimental to recovery for patients with pre-existing kidney disease. If deposited in blood vessels, it will stimulate the vessel walls and may aggravate atherosclerosis, inducing or aggravating conditions such as coronary heart disease and cerebrovascular disease. Regardless of whether patients have other diseases, they need to improve their lifestyles by limiting high purine diet, such as animal offal, fish, shrimp, meat, mushrooms, soybeans, lentils, peas, strong tea, etc. The diet should be light and easy to digest, and avoid spicy and stimulating foods, such as chili peppers.