This paper introduces the clinical experience in treating rheumatoid arthritis by the method of activating blood circulation to dredge collaterals. It is argued that deficiency of liver and kidney is the internal factor and wind, cold, dampness, heat are the external factors. Phlegm, turbid and blood stasis are the main pathological factors. Stagnation of meridian and collaterals are the root of the disease. “Tianjia Tongbi Powder” is the basic prescription which can be applied in clinic. It can be modified based on different patterns. One proven is presented.