The fastest way to reduce the swelling of the face depends on different causes: first, if the swelling of the face is caused by gingivitis or inflammation of the wisdom teeth, anti-inflammatory drugs can be used for treatment, and ice can also be used to reduce the swelling. Secondly, if the facial edema is caused by allergies, anti-allergy drugs such as paracetamol and loratadine can be used. Thirdly, if the swelling of the face is caused by drinking too much water the night before, or not having a good rest. This can be done by applying potato slices to the face, or by applying ice to the face to reduce swelling. If the edema is caused by pathological factors, such as kidney disease, liver disease, heart disease and so on. In this case, symptomatic treatment can use diuretics, such as furosemide, hydrochlorothiazide, etc. to achieve the purpose of reducing swelling.