Abstract: To study the pathogenesis， syndrome differentiation and treatment thoughts of gout based on the purgation method. It is believed that the pathologic evolution of gout can be summarized as five aspects including dampness， heat， phlegm， stasis and deficiency. And phlegm and stasis are the key aspects that determine the severity and prognosis of the disease， which are the unavoidable outcomes of the pathological changes of gout. Clearing and purging method is used in the acute stage to clear heat， dispel the heat and dampness and detoxicate the toxin. Acrid opening and bitter downbearing method is applicable to the recurrent stage， to remove phlegm and blood stasis as well as to dredge meridians and collaterals. Tonifying the deficiency and dredging the stagnation are suitable to the remission stage to ascend lucidity and descend turbidity， for the dredging method can be known as tonification.