It is possible to eat raw yam, but the flavor will be relatively poor. Yam is a common food in daily life, containing a large amount of starch, protein, vitamins, bile alkali, allantoin and polyphenol oxidase and other nutrients, moderate consumption can replenish the nutrients needed by the human body, and help to maintain the body metabolism and so on. Yam can be eaten raw, but the taste will be worse. The mucus of raw yam is rich in amylase and glycolytic amylase, which not only digests its own starch, but also helps to digest other starches ingested. However, it is recommended that people with weak stomachs try not to eat raw to avoid causing diarrhea; and not to eat too much at once to avoid burdening the body’s digestive system. It should also be noted that raw food should pay attention to the yam clean and peeled, because the skin of the yam is prone to cause allergic symptoms in some people.