Eat allopurinol uric acid after the normal need to reduce the amount, and need to be gradually reduced under the guidance of a doctor. Allopurinol is a kind of inhibition of uric acid synthesis to play the effect of uric acid drugs, the drug needs to be a small dose of drugs, weekly increments, every 2 weeks to determine the level of blood uric acid and urinary uric acid and according to the results of the test to adjust the amount of drugs, when the patient is stable after the control of uric acid such as the need to reduce the amount of need to be carried out gradually to minimize the effective dose of maintenance of a longer period of time. Avoid the fluctuation of blood uric acid level to aggravate the condition. Attention to allopurinol 1 day maximum dosage shall not exceed 600mg, children, the elderly need to adjust the dosage, should increase the amount of drinking water during the drug, during the period of the drug need to regularly monitor the blood uric acid and urinary uric acid level in order to adjust the dose of the drug. Adjustment of drug dosage and drug treatment program should be guided by professional physicians, and patients are recommended to go to the endocrinology department and rheumatology department of regular hospitals for detailed consultation, and do not change the dosage of the drug without authorization.