Abstract: The experiences of WU Tang in treating infantile malnutrition are summarized as follows: soothing and tonifying middle energizer， ascending and descending stomach qi to raise the prolapsed spleen yang， nourishing stomach with slightly sweet flavor， harmonizing nutrient and defense qi to invigorate spleen yang， modifying diets， dispelling worms with bitter， cold and sour herbs; mildly transporting spleen yang and dispersing stomach qi. It is believed that the above nine methods for treating infantile malnutrition is put forward based on the infantile constitution of "spleen deficiency" and malnutrition pathological character of "deficient root with overdo superficial". The focus on spleen and stomach and comprehensive treatment will provide important guidance for infantile malnutrition.