Regulating liver and spleen, one of methods of Traditional Chinese Medicine treatment, belongs to reconciliation method. Regulating liver and spleen means to coordinate the function of liver and spleen, including the regulation of liver, spleen, and combined regulation. Professor Zhang Shengsheng considers spleen-stomach diseases are associated with disorders of liver and spleen, and thus manifested different syndromes in clinic. Based on syndrome differentiation, professor Zhang Shengsheng analyzed the pathogenesis of disorders of liver and spleen function and treated problematic spleen-stomach diseases by regulating liver and spleen. He excels at applying paired herbs. The dosage of Chinese herbal medicine he used is always refine and accurate.