Transfusion of human albumin usually corrects hypoalbuminemia in the body, raises colloid osmotic pressure, and improves tissue edema. Albumin is a protein synthesized by the liver and belongs to the colloid class, which can maintain the osmotic pressure in the body. When albumin is lowered, the water in the blood will penetrate into the tissue interstitial space through the blood vessel wall, and there will be tissue edema, such as pulmonary edema, etc. Through the infusion of human blood albumin, low albumin can be corrected and tissue edema can be improved. Human albumin is a blood product extracted from blood, which may contain viruses and other harmful components that may increase the risk of infectious diseases. It should be input under medical supervision.