Patients with bad liver can eat protein in moderation, but it is not recommended to consume too much, especially for patients with severe liver disease and cirrhosis. The liver is the body’s digestive organ, with four major functions: metabolism, synthesis, detoxification and excretion. When the liver is not functioning well, symptoms such as fatigue, anorexia and bloating may occur. When the patient’s liver is not good, but can carry out normal metabolism, can moderate intake of protein, do not recommend excessive intake, to be able to maintain the daily labor consumption can be. Patients with severe liver disease and cirrhosis have reduced digestive function, and excessive protein intake will be broken down into ammonia by bacteria in the intestine. Ammonia is a toxic metabolite that may enter the brain tissue through the blood-brain barrier and cause hepatic coma. Therefore, it is not recommended that patients with heavy liver disease and cirrhosis consume too much protein. Patients with poor liver health are advised to take adequate vitamin supplements, and to try to choose easily digestible foods in their diet and avoid stimulating foods.