Small blood light vine has the effect of warming the kidney, eliminating wind-dampness, strengthening the muscles and bones, and is often used to treat rheumatism and paralysis pain or deficiency of kidney essence. Small blood light vine is the root or stem of the strychnine plant narrow-leaved ponglai kudzu, mainly used for the treatment of bruises, rheumatism paralysis pain, manifested as joint swelling and pain, flexion and extension of the unfavorable; or for the treatment of renal essence deficiency, manifested as lumbar and knee pain, enuresis, scrotal dampness, and so on. Although small blood light vine can be used to treat a variety of diseases, but must be used under the basis of traditional Chinese medicine diagnosis. Moreover, there are some differences in the way of administering the drug to deal with different illnesses, so strictly follow the doctor’s instructions and use the correct usage to apply Xiaoguangtian, in order to make the drug play its due efficacy.