Lower extremity arteriosclerosis obliterans can cause pain and disability， which brings great burden to people's health and economy. Chinese medicine has certain advantages in its treatment. Professor LYU Peiwen believed that "stasis of the choroidal veins" was the main pathological change of arteriosclerosis obliterans of lower limbs， and put forward the concept of “the choroidal veins take pass as use”， so as to form a treatment based on “Promoting blood circulation and clearing collaterals”.Millettia dielsiana has the effect of tonifying blood and activating blood， relaxing tendons and clearing collateralities，it is a traditional Chinese medicine commonly used in tonifying blood and promoting blood circulation. Professor LYU Peiwen has widely used it in the treatment of arteriosclerosis obliterans of lower limbs， effectively aimed at the etiology and pathogenesis of “stasis of the choroidal veins”， the combination of supplementing qi， supplementing blood and nourishing Yin， warming channels and dispelling cold， clearing heat， promoting blood circulation and removing stasis， removing phlegm and removing dampness， and regulating qi can achieve the effect of activating blood circulation and clearing collaterals.