This paper summarized the experience of BAI Changchuan in treating children spleen and stomach di-seases from "stagnation" theory. Based on LI Gao′s theory that "internal impairment of the spleen and stomach would bring about various diseases"

and integrated with modern society′s diet and living habits as well as the features of symptoms of spleen and stomach diseases

BAI Changchuan held that "the spleen and stomach can be harmed by stangnation". It is known that "the spleen is often insufficient" in children with regard to physiological and pathological characteristics; moreover

with the changes of environmental factors and feeding ways

the "stagnation"-induced spleen and stomach diseases are more prominent in children than in adults. The principle of "fortifying the spleen and harmonizing the stomach" is suggested to be adopted to treat the "stagnation"

which can be divided into food stagnation

cold stagnation

heat stagnation

dampness stagnation

qi stagnation

blood stagnation

toxin stagnation

stagnation due to deficiency

and others according to different causes. The seven methods to fortify the spleen include transporting

raising

descending

harmonizing

dispersing

warming and nourishing the yin

yang

qi and blood of the spleen.