Gout stones are usually caused by elevated levels of uric acid in the body. 1. Patients usually due to purine metabolism disorder or reduce the excretion of uric acid, urate to tiny needle-like crystals precipitated in the soft tissue, triggering chronic inflammation and foreign body reaction so that the fibrous tissue hyperplasia to form stones, which are surrounded by megakaryocytes, dermatocytes, and a small number of patients will be infiltrated with lobular nuclei cells, resulting in a foreign body stones. 2. Elevated uric acid level is the main cause of gout stones, while excessive intake of seafood, animal offal and alcohol consumption may lead to elevated uric acid. When gout occurs, it usually manifests itself in swollen and painful joints, and a few patients may also experience joint deformities. 3. In addition, a few diseases can also lead to endogenous uric acid elevation, such as renal failure, so that the patient’s uric acid metabolism is reduced, thus triggering uric acid elevation leading to gout, if the disease is not treated in time, the uric acid continues to rise will form gout stones. Gout stones are recommended for further examination and treatment under the guidance of a doctor.