For the diet of liver failure, it is important to supplement with enough calories, mainly high carbohydrates, but also low fat, moderate amount of protein, and rich vitamins. Some patients have low protein and ask if they can supplement more protein. Patients with liver failure are not suitable for protein supplementation, and supplementing large amounts of protein may induce or aggravate hepatic encephalopathy. It may also be necessary to give fiber, which promotes bowel movements and keeps the bowels open to avoid hepatic encephalopathy. The diet should also be clean to avoid intestinal infections, and can be supplemented with some probiotic preparations to help liver function recovery. So the diet for liver failure is mainly high in carbohydrates, low in fat, moderate in protein, and also rich in vitamins. If the patient eats very poorly, the patient with poor nasal intake does not want to eat, and when the feeding supplement is not enough, it is necessary to cooperate with the doctor for parenteral nutrition to supplement sufficient calories to help liver function recovery.