Swollen feet in the elderly is not a sign of death, the cause of the onset of the disease may be too long walking time, resulting in venous reflux obstruction and other physiological factors, but also may be the elderly suffering from heart failure, cirrhosis and other liver diseases, malnutrition and other pathological causes of swollen feet. 1. Congestive heart failure: due to the decrease of renal blood flow, secondary to the increase of aldosterone, causing sodium and water retention and venous stagnation, it is commonly seen in congestive heart failure caused by various etiologies such as rheumatic diseases, hypertension, and various pathologies such as valvular and myocardial. Edema is characterized by first appearing in the low-hanging parts of the body, such as those who can get up and move often appear in the inner side of the ankle. 2. Cirrhosis and other liver diseases: edema of hepatic origin: due to the reduced ability of the liver to synthesize plasma proteins, mainly seen in cirrhosis, hepatic necrosis, hepatocellular carcinoma and other liver diseases. Edema is characterized by depression, often appearing in the ankle first, gradually spreading upward, and finally forming persistent abdominal effusion. 3. Malnutrition: It is characterized by emaciation and weight loss before the onset of edema. The reduction of subcutaneous fat causes tissue relaxation and tissue pressure reduction, which aggravates fluid retention. Edema often starts from the feet and gradually spreads to the whole body. When found that the elderly foot swelling should be timely medical consultation, to clarify the cause of the disease, so as not to delay treatment.