It is usually fine for normal people to consume mutton and crab in small amounts at the same time, but people with weak digestive functions, old age or chronic diseases of other systems should try to avoid eating mutton and crab together. As both crab and lamb contain a large amount of animal protein and purines, they can be digested by normal people if eaten properly, but for people with underlying physical illnesses or poor digestive function, they may cause symptoms such as diarrhea, vomiting or abdominal distension. When lamb and crab are consumed alone, care should also be taken to ensure that the intake is not too large to avoid gastrointestinal discomfort. In addition, crabs and lamb contain a lot of purine, long-term consumption of lamb, crabs and other high-purine food, may also induce gout or cardiovascular disease. Both are high protein diet, eating too much can also increase the burden on the kidneys, so people with renal insufficiency must control the amount of food, do not eat. In addition, from the Chinese medicine point of view, mutton is a warm food, can benefit the gas, crab cold, easy to aggravate the accumulation of cold in the body, crab and mutton with food will reduce the warmth of mutton effect. For people with weak spleen and stomach, the two together will aggravate the symptoms of discomfort, leading to dysfunction of the spleen and stomach, especially not suitable for people with spleen yang deficiency, easy to abdominal distension, ambiguous gas, diarrhea, as well as nausea and vomiting and other manifestations.