Abstract:Hepatitis B disease has the nature and pathogenic characteristics of epidemic disease. HBV has hepatotoxicity and often shows "damp heat syndrome" after infection. Therefore, the infection of damp-heat epidemic is its root cause."Damp heat" not only inherits the original characteristics of wet and hot two evils, the two yin and yang are combined, resulting in the complex and multi-faceted clinical manifestations of hepatitis B.Damp-heat epidemic stagnation, liver, spleen and kidney function is the key to its pathogenesis, the disease is the virtual standard, virtual and real.Clinically, it can be divided into three types: liver and gallbladder dampness syndrome, liver spleen deficiency syndrome, liver and kidney deficiency syndrome. The syndromes of Longdan Xiegan Decoction, Liver Depression and Spleen Decoction, Yinchenhao Decoction and Xijiao Dihuang Decoction are used as the representative. The law goes with the certificate, flexible prescription, can not be paranoid, do not commit the ring of the real thing.Attached to the case.