The reason for the swelling of the face after drinking is as follows: 1. The reason for the swelling of the face is because of the ethanol in alcohol, which is rapidly decomposed into acetaldehyde under the action of liver ethanol dehydrogenase, acetaldehyde is a toxic acid that can make capillaries open around and form arteriovenous short circuits and direct pathways open, this chemical will make the surrounding capillaries congested and leaky, thus causing local tissue edema, especially in the 2, face swelling after drinking may also be due to reduced liver function, the liver’s detoxification function is relatively weak when the liver is reduced, so there will be swelling. 3, patients with primary renal insufficiency and cardiac insufficiency, face swelling after drinking is particularly obvious, because the protein in the blood is low, water will seep out of the blood vessels and This is because the protein in the blood is low and water leaks out from the blood vessels, resulting in swelling of the face.