The reason for face swelling: First, it is related to not having a good night’s rest the night before or drinking a lot of water before going to bed the night before. Secondly, there may be a certain allergic condition in the swollen face, and such patients are often accompanied by itchy skin as well as redness. Third, the face swelling may be an idiopathic edema, that is, an unexplained edema. This kind of patients often after rest, the face swelling symptoms can be relieved. Fourth, pathological factors, such as liver disease, kidney disease, heart disease and endocrine system diseases can lead to a swollen face. Kidney disease is common is chronic glomerulonephritis, nephrotic syndrome, or kidney failure will lead to swollen face. Heart diseases are most common, such as heart failure caused by a series of diseases. Liver disease is most commonly caused by reduced protein synthesis after liver failure, resulting in hypoproteinemia.