Uric acid usually refers to blood uric acid, and the normal value of blood uric acid is 150-380μmol/L for men and 100-300μmol/L for women. Hyperuricemia is usually identified when the blood uric acid is higher than 420μmol/L for men or 350μmol/L for women. Therefore, when the blood uric acid test result is 490μmol/L, it suggests hyperuricemia. Blood uric acid is the metabolite of purine, when consuming more medium and high purine food, blood uric acid will be elevated in the body.1, low purine food: when the amount of purine contained in 100g of food is less than 25mg, it is called low purine food. Low-purine foods include cabbage, bok choy, cabbage, tomatoes, cucumbers, winter squash, zucchini, rice, sorghum, potatoes, yams and so on, in addition to almost all the fruits containing low purine. People with high uric acid should focus on a low purine diet; 2, high purine food: when 100g of food contains more than 150mg of purine, called high purine food. Foods with high purine content mainly include animal offal, such as pig liver, pig heart, lily pads, etc.; most seafood, such as oysters, scallops, crabs, shrimp, freshwater fish, etc.; as well as beef and mutton, thick meat broth, fish soup, etc.. People with high uric acid should seriously limit the high purine diet to avoid further elevation of uric acid; 3, medium purine food: located between the two is called medium purine food. Medium purine food is mainly beans, such as soybeans, black beans, red beans, as well as soybeans made of tofu, soy milk. If the diet is dominated by medium and high purine foods, the blood uric acid in the body is likely to rise. Once blood uric acid is found in the body above 490umol/L, a low purine diet should be maintained, and the body should be closely observed for any complications, such as high blood pressure, high blood sugar, high blood cholesterol, and so on. When complications exist at the same time, while controlling the diet, it is also necessary to add uric acid-lowering drugs under the guidance of the doctor, such as allopurinol, febuxostat and so on.