High uric acid can cause stones in the urinary system, mainly in the kidneys. If uric acid is too high, the kidneys metabolize too much uric acid and discharge it from the urine, which can cause high concentration of uric acid in the urine and precipitate crystals and stones, which can also cause back pain or hematuria. It is recommended that patients be treated with medication after the presence of pure uric acid stones is clearly established, so that the uric acid level in the body can be controlled to a normal range first, and then the size of the stones can be gradually reduced or dissolved. However, for patients with acute pain, extracorporeal shock wave lithotripsy or medication for pain relief can be considered to relieve symptoms before taking uric acid-lowering medication to control the blood uric acid level. In terms of diet, it is important to drink a lot of water, more than 3000mL per day, to fully hydrate body fluids, and to reduce the intake of purine foods, such as all types of seafood, animal offal and alcohol during the disease.