Abstract： The paper introduces the experience of professor LIN Ping in syndrome differentiation and treatment of the spleen- stomach diseases. In the treatment，LIN pays attention to pathogenesis throughout the whole treatment process， aiming to harmonize the five viscera by prescription. The methods of harmonizing the five viscera are as follows：taking the spleen and the stomach as the foundation， nourishing the heart to calm the mind， diffusing the lung and directing qi downward， smoothing the liver and regulating qi， and nourishing the innate endowment. In conclusion， it is to take “focusing on pathogenesis” as an important guiding principle in the process of syndrome differentiation and treatment，pay attention to the relationship between the five viscera， and apply the thinking of "harmonizing the five viscera" to guide the clinical prescription in the treatment of the spleen-stomach diseases.