Low protein can be supplemented by consuming high protein food, intravenous albumin supplementation, etc., and at the same time correcting the diseases that cause too little protein absorption or too much protein excretion. 1. If the degree of low protein is mild, it can be supplemented by increasing the intake of high protein foods, such as eggs, milk, soy products, lean meat, etc. Protein powder can also be consumed in moderation as a nutritional food supplement. It is necessary to pay attention to the gradual supplementation, so as not to cause gastrointestinal discomfort by consuming too much protein in the short term. 2. For those who have a severe low protein level or cannot supplement by oral intake, human albumin can be infused intravenously, and the dosage of human albumin should be considered at the discretion of the physician according to the lack of condition. Chills, fever, rash, nausea and other discomforts may occasionally occur after use. It is contraindicated for those with severe allergy to albumin, hypertension, acute heart disease, heart failure, severe anemia and renal insufficiency. 3. For people with low protein, it is recommended to actively search for the cause of low protein, timely treatment of diseases that cause low protein absorption or excessive protein excretion, such as nephritis, cirrhosis of the liver, chronic wasting disease, etc., and regular review and monitoring of relevant indicators.