Objective:To investigate the effect of Bushen Tongluo capsule on peripheral Th1/Th2 ratio and serum IFN-γ,IL-4,TNF-α and IL-1β of patients with rheumatoid arthritis(RA).Methods:RA patients were divided randomly and double-blind into treatment group(36 cases) that was treated with Bushen Tongluo capsule and control group(35 cases) that was treated with Tripterygium glycosides tablet.Both groups were treated for 12 weeks.The changes of peripheral blood Th1/Th2 ratio and serum IFN-γ,IL-4,TNF-α and IL-1β were o...