Objective: To analyze the distribution, differential diagnosis and conversion of Yang-icterns to Yin-icterus in patients with chronic severe hepatitis B (CSH) . Methods: Prospective cohort study was carried out, in 151 hospitalized patients with CSH, to insvestigate the distrubution of two sub-typies (Yang/Yin-icterus) and majors factors, such as duration of icterus, physique, administration of herbs with cold nature in Yin-icterus genesis. Results: (1) Eighty-six of 151 cases (56. 9% ) were patients with Yang-ieterus, 17 of 151 case...