Yam slices are made from sliced yam; yam boiled in water has the effect of benefiting qi and nourishing yin (tonifying qi and yin fluids), tonifying the spleen, lungs and kidneys, and fixing semen and stopping bandages. Specifically should follow the doctor’s instructions to take. Yam is a kind of traditional Chinese medicine, also known as the Department of pre, Dioscorea, yam, for the Dioscorea plant Dioscorea rhizome. Its flavor is sweet, nature is flat, spleen, lung, kidney three meridians. It is mainly used for treating spleen deficiency, low stamina, tiredness, loose stools (thin and unformed feces), wheezing and coughing, spermatorrhea, dyspareunia, frequent urination, and thirst. The adverse reactions and contraindications of yam are currently unknown. Precautions are that it is contraindicated for those with dampness in the middle (too much dampness causing fullness and discomfort in the spleen and stomach) or with solid evils or stagnation. Chinese medicines or proprietary Chinese medicines need to be used under the guidance of a Chinese doctor to identify the symptoms, and individuals should not use them blindly to avoid adverse consequences.