Abstract: Effects of Bu Qi Huo Xue therapy on the treatment of Qi Xu Xue Yu syndrome in postpartum dairy cows were studied from the variation of hemorheology traits,oxygen free radical and nitric oxide free radical. The dairy cows were divided into three groups, 18 healthy postpartum cows, 9 postpartum dairy cows displaying Qi Xu Xue Yu syndrome, and 8 postpartum dairy cows displaying Qi Xu Xue Yu syndrome treated with herbs. The last group was fed with Gui-Qi-Yimu powder (Powder of chinese angelica, astragalus and motherwort) 5 times, at 0.8 g/kg according to the weight at 1, 2, 3, 5 and 7 d postpartum. Blood samples was taken to analyze the designed indexes of dairy cows at 1, 2, 4, 7 and 10 d postpartum.The results demonstrated that Gui-Qi-Yimu powder treatment significantly decreased ηb20s^-1（P<0.05）at 1 and 2 d, and ηp（P<0.01 or P<0.05）at 4, 7, 10 d; malondialdehyde contents at 1 , 2 and 7 d; as well as nitric oxide contents at 1 to 10 d of postpartum dairy cows with Qi Xu Xue Yu syndromes. Thus Bu Qi Huo Xue therapy can significantly improve the hemorheological status and maladjustment of oxygen free radical and nitric oxide free radical metaboly of postpartum dairy cows displaying Qi Xu Xue Yu syndrome.