Damp-heat syndrome in the spleen is a common and frequently occurring disease in clinical practice. It not only has obvious seasonality, commonly seen in summer; but also has obvious regional characteristics, mainly in southern China, with the Sichuan Basin being even more so. Damp-heat syndrome in the spleen is a kind of syndrome in traditional Chinese medicine, which can be seen in the process of various diseases in clinical practice, and can also appear independently as a common seasonal syndrome in summer. It is a syndrome manifested by the internal accumulation of damp-heat in the middle-jiao. It is caused by overeating of rich and sweet foods, or by external damp-heat pathogens.