Facial edema in the elderly is mainly considered to be caused by cardiogenic edema, renal edema, etc., and may also be drug edema. 1. Cardiogenic edema: if the old man has pulmonary heart disease, coronary heart disease, hypertensive heart disease and other basic heart disease, the basic disease control is not good to cause heart failure will cause facial edema, also can be accompanied by chest tightness, palpitation, lower limb edema, dyspnea and so on. 2. Renal edema: if the elderly have nephritis, kidney damage and other diseases, edema can start from facial edema, accompanied by lower limb edema, and the edema is relatively obvious when waking up in the morning. 3. Drug edema: if the elderly take drugs and then produce drug allergy symptoms, it can also be manifested as lip and facial edema symptoms. It is recommended that elderly people with edema should consult a doctor in time to find out the cause of edema and treat it actively so as not to delay the condition.