In a word, the function of light osmosis and diuresis of Polyporus umbellatus can improve the constitution or syndrome of spleen deficiency and dampness resistance, and take Polyporus umbellatus as the monarch or envoy in the treatment prescription, thus achieving the effect. As the saying goes, "treating dampness is not good for water, but it is not a cure." Finally, I would like to thank my mentor XX for his careful guidance, all my colleagues in XX department for their great help in improving clinical data, and even more thank me for my selfless dedication and support!