Yam is calm in nature and is not harmful to the stomach and intestines when taken properly. Yam is suitable for patients with weak spleen and stomach and loose stools. If you need to use yam to treat diseases, it is recommended to do so under the guidance of a doctor. Yam is the name of a kind of traditional Chinese medicine, its flavor is sweet, nature is flat, belongs to the spleen, lung, kidney meridian. It has the effect of nourishing the spleen, nourishing the stomach, generating fluids and benefiting the lungs, nourishing the kidney and astringing the essence. It is used for spleen deficiency with little food, prolonged diarrhea, lung deficiency with wheezing and coughing, kidney deficiency with spermatorrhea, dyspareunia, frequent urination, deficiency heat and thirst. Bran fried yam tonifies the spleen and strengthens the stomach, and is used for spleen deficiency with little food, diarrhea with loose stools, and excessive leucorrhea. The adverse effects of this drug are not clear, and it is contraindicated for people with dampness (too much dampness leading to fullness and discomfort in the spleen and stomach) or solid evils or accumulation of stagnation.