Mutton and onions can be eaten together, as long as the consumption of moderate amount, and their own no corresponding food allergies, eat together generally does not produce any harm. Mutton and onions are common foods, a meat ingredient, a common vegetable, can be reasonable with food. Each of them contains some nutrients that are beneficial to the human body, such as the high protein content of lamb, which is a better meat food. The protein content is about 19% and can be used as a protein food source. Onion contains carotene, vitamin C and other ingredients, in addition to the body can increase the relevant nutrients, and onion is also a kind of flavoring ingredients, as a supplement with lamb consumption can also be deodorized to relieve greasiness, to enhance the appetite also has some benefits. However, it should be noted that lamb as a meat food, do not eat too much, to avoid excessive gastrointestinal digestive burden. The onion contains some sulfide components, spicy irritation, raw food easy to stimulate the mucosa of the digestive tract, but also in moderation. Especially gastrointestinal digestive function is weak, this should pay attention to the good.