XiaoChaiHuTang, the chief formula for harmonizing Lesser Yang, originates from ”On Cold Damage”. It is currently used in post-stroke dizziness, anti-depression, primitive dysmenorrhea, assorted eye diseases, children's high fever due to external evils, liver fibrosis, menstruation fever, kidney syndromes, bile reflux gastritis, premature ventricular contraction, asthma of cough variation, PCOS with modification accordingly.