Gout stone is also called gout nodule. The formation of gout stone is due to the high level of blood uric acid, which exceeds the saturation of blood, thus precipitation of urate crystals. If this urate crystal is repeatedly deposited into our joints and surrounding soft tissues, it will form a gout stone. Therefore, if we want to eliminate gout stone, we can only control our blood uric acid level below 300 μ mol/L for a long time through standardized and continuous treatment to reduce blood uric acid to the standard, so that we can gradually dissolve gout stone. At present, there are two main types of drugs for reducing uric acid: 1. Drugs that inhibit the formation of uric acid, such as allopurinol and febristat. 2. Drugs that promote uric acid excretion, such as benzbromarone. It is suggested to consult with the Rheumatology and Immunology Department of a regular hospital about how to choose a drug to reduce uric acid.