Patients with colds can eat yam in moderation, but it is not recommended to eat yam if it is accompanied by dampness (too much dampness leading to fullness and discomfort in the spleen and stomach) or if there are solid evils or stagnation. Yam is the rhizome of Dioscoreaceae plant Dioscorea spp. When used as medicine, it is sweet in taste and flat in nature, and belongs to the spleen, lung and kidney meridians. It has the efficacy of nourishing the spleen and nourishing the stomach, promoting the production of fluid and benefiting the lungs, and nourishing the kidney and astringing the vital essence, and can be clinically paired with drugs such as lock yang and dangshen for the treatment of fatigue and weakness, loss of appetite, coughing and wheezing in lung deficiency, spermatorrhea, diaphoresis, and frequency of urination. This product nourishes yin and can help dampness, so dampness in the fullness or stagnation, solid evil should not be served. Yam as food, patients with colds can be appropriate to eat, has a certain role in replenishing lung qi, but not too much. If patients with colds need medication, they should consult a traditional Chinese medicine practitioner and not take medication without authorization.