The most likely cause of swollen face and feet is right heart failure, or both left and right heart failure (total heart failure). In this case, the first step is to perform cardiac ultrasound, urine routine, chest X-ray, electrocardiogram and BNP examination to clarify the presence of heart failure and other conditions. After the diagnosis of cardiac insufficiency is confirmed, treatment such as cardiac stimulation, diuresis and potassium supplementation can be given. If the treatment is not effective, it is necessary to consider whether the swollen feet and face are caused by renal insufficiency, hepatic insufficiency and hypoproteinemia, etc. If necessary, consult with nephrology and gastroenterology.