Eating alfalfa is contraindicated for people who are allergic to alfalfa, and the general population can eat in moderation. Alfalfa belongs to a kind of nutritious wild vegetables, which contains carbohydrates, protein, carotene, vitamin C, calcium, potassium, magnesium, phosphorus and other nutrients, 100 grams of alfalfa contains 35 calories, of which 5 grams of protein, 2.9 grams of carbohydrates, 0.7 grams of fat, 1.4 grams of cellulose. It can replenish the body with the nutrients needed by the body and maintain the normal physiological function of the body. Generally speaking, people who are allergic to alfalfa should not consume it to avoid allergic reactions, and the general population can consume it in moderation. When consuming alfalfa, it is not recommended to consume it for a long time singly or in excess, so as not to lead to a single source of nutrients. If consumed in excess for a long period of time, it may burden the gastrointestinal tract, resulting in diarrhea, bloating and other indigestion manifestations. If alfalfa has been deteriorated should stop eating, such as mold, rot, etc., so as not to have an impact on health.