The causes of high uric acid in children are many, and different causes require different treatment measures. Mainly include physiological causes such as large amounts of high purine food, pathological causes such as genetic factors, nephritis, etc., generally can follow the doctor’s instructions for medication, general treatment and so on. 1. Physiological reasons: after fever, a lot of sweating or exercise sweating, no timely supplementation of water, resulting in blood concentration, can be manifested as elevated blood uric acid, should pay attention to drink more water, eat more vegetables and fruits can be improved. In addition, often large intake of seafood, broth and other high-purine food can also cause different degrees of blood uric acid elevation, need to pay attention to change the diet. 2. Pathological causes (1) Genetic factors: some genetic factors can lead to a lack of certain enzymes affecting purine metabolism, resulting in a significant increase in uric acid, can use uric acid-lowering drugs such as allopurinol, febuxostat and other drugs for treatment. (2) nephritis: nephritis and other diseases can cause children to excretion of uric acid ability to decline, showing increased blood uric acid, can be in the treatment of the primary disease at the same time as the use of uric acid-lowering drugs such as benzene bromelain, etc. to increase uric acid excretion. Children with high uric acid, it is recommended to pay attention to their daily diet, if it is pathologically caused by increased uric acid, it is recommended to go to the hospital in a timely manner, under the guidance of the doctor to carry out treatment, and regular review.