Yam powder is made from powdered yam, which has the effect of benefiting qi and nourishing yin (tonifying qi and yin fluids), tonifying the spleen, lungs and kidneys, and fixing spermatozoa. Yam powder is mainly used for the treatment of spleen deficiency with little food, tiredness (fatigue), loose stools (loose feces) and diarrhea, lung deficiency with asthma and cough, kidney deficiency with spermatorrhea, dysuria and frequent urination, and internal heat and thirst (internal heat accompanied by eating, drinking, urinating, etc.). Dampness in the center of fullness (dampness is too heavy to cause fullness and discomfort in the spleen and stomach) or solid evil, stagnation, people are prohibited to take yam powder. The adverse reactions of Chinese yam powder are not clear at present. If patients have any discomfort, please go to a regular medical institution; if you need to use yam powder, it must be used under the guidance of a professional doctor.