Edema in the hands and feet of the elderly can be considered to be related to cardiovascular diseases (such as right heart failure), renal diseases (such as chronic renal failure) or malnutrition. 1. Cardiovascular diseases: hypertension, coronary heart disease is the main cause of chronic heart failure, when right heart failure occurs, edema, jugular vein sign, hepatomegaly and other signs of body circulation stasis, due to the elevated pressure of body veins, there can be edema in the low-hanging parts of the body, and ultimately there is generalized edema. 2. Renal disease: when nephrotic syndrome occurs, due to hypoalbuminemia, plasma colloid osmotic pressure decreases, water enters into the tissue interstitial space from the vascular cavity, causing sodium and water retention, which can cause edema of the hands and feet and other parts of the body. 3. malnutrition: with consumptive diseases such as tumors or severe malnutrition, etc., can be due to the decline in plasma albumin, water from the blood vessels into the osmosis, resulting in edema of the hands and feet or the whole body. Swollen hands and feet of the elderly, it is recommended to go to the regular hospital in a timely manner to identify the cause of the disease, the cause of the symptomatic treatment.