The medicinal effects of yam are tonifying the spleen and nourishing the stomach, generating fluids and benefiting the lungs, and tonifying the kidneys and astringing the essence. It can be used to treat weak spleen and stomach, loose stools (scanty and unformed feces), tiredness and fatigue. Yam is the dried rhizome of Dioscoreaceae plant, sweet and flat in nature, belonging to the lung, spleen and kidney meridian, with the effect of tonifying the spleen, nourishing the stomach, promoting the production of fluids, tonifying the kidney and astringing the essence, it is used for treating the deficiency of the spleen with little food, prolonged diarrhea, lung deficiency with wheezing and coughing, spermatorrhea with kidney deficiency, diarrhea, frequent urination, deficiency heat and thirst. Fried yam can enhance the effect of tonifying the spleen and stopping diarrhea, and is used for treating spleen deficiency with little food, loose diarrhea, and excessive leucorrhea. The adverse reactions and contraindications of this product are not known. If medication is needed, it should be used under the guidance of a doctor, do not blindly self-medicate.