The experiments were carried out to investigate the effects of Rhodiola sachalinensis complex prescriptions(RSCP) on exercise capacity and red cell immune function in rats. In comparing with the training group

a stronger exercise capacity was found in rats treated with RSCP. It was manifested by raising the percentage of the rats completing training quantity and prolonging the endurance running time. And RSCP could also raise the level of RBC-CR1 rosette forming rate which was inhibited by a long period of heavy load exercise. The results of our experiments suggested that RSCP shows effectiveness in improving the exercise capacity and in restoring the impaired RBC immune function induced by heavy load exercise training.