Objective To investigate the effect of Tongxi Powder(TP) on decreasing the uric acid of mice with acute hyperuricemia.Methods The mice were divided into model,allopurinol(positive control,10 mg/kg),low-,mid-,and high-dose(100,300,and 500 mg/kg) TP groups.Except the model group,mice in other groups were administered once daily for 3 d.The acute hyperuricemia model of mice was established 2 h after the last administration and then ip uric acid(450 mg/kg),and the blood uric acid contents were determined after 80 min.Results Compared with the model group,TP at mid-and high-dose could obviously decrease the blood uric acid level in mice(P 0.01),so did allopurinol(P 0.01).The effect of high-dose TP group was the same as that of allopurinol group.Conclusion TP could inhibit the increase of blood uric acid in mice with acute hyperuricemia.