Abstract: The transportation and transformation function of the spleen is based on the normal qi movement of the ascending of the spleen and the descending of the stomach.It needs to interact with the ascending of the liver and the descending of the lung to regulate the qi movement.The normal transportation of the spleen can "mediate" the qi movement of the four viscera and transform essence qi to nourish the five viscera.This article summarizes the entire process of the spleen′s transportation and transformation in four stages:"The stomach accepts and the spleen transports to generate essence,the spleen governs distribution and transformation to refine essence,the lung assists the spleen qi to disperse essence,and the spleen ascends and the intestines descend to transport essence",forming the academic thought of "the spleen governing the four essences".The following processes are further specified and visualized,including the digestion and absorption of food and water by the stomach,the ascending of the clear substances and the descending of the turbid substances by the spleen,and the distribution and transportation of the refined substances of the resulting qi and blood after further processing.Starting from the ascending and descending and pivoting of qi movement in the spleen and stomach,lung and liver,lung and stomach,and liver and spleen,the "method of regulating spleen to mediate qi movement" is used to regulate the ascending and descending functions of qi movement in the spleen and stomach,and liver and lung,and is closely combined with the pathogenesis,disease location,and treatment methods of pediatric diseases,which lays a foundation for its clinical application.The spleen of children is often insufficient in the physiological state,and the spleen and stomach are easily injured by diet,resulting in abnormal ascending and descending of qi movement in the spleen and stomach,so children often have spleen diseases.The "method of regulating spleen to mediate qi movement" includes various treatment methods,such as regulating the spleen to eliminate accumulation,regulating the spleen to eliminate distension,regulating the spleen to soothe the liver and reduce the adverse qi,and regulating the spleen to ventilate the lung and unblock the orifices.It is a comprehensive treatment approach that can quickly restore the transportation and transformation function of the spleen and also promote the recovery of the qi movement through "mediating the four viscera" by the spleen,which provides new ideas and methods for the treatment of pediatric diseases.

Key words: Spleen and stomach, Ascending and descending of qi movement, Regulating spleen to mediate, Child