Swollen feet in the elderly does not mean that the disease is serious and is not a so-called pre-mortem sign. Swollen feet in the elderly should be a very common symptom, and there are many causes of swollen feet, such as swollen feet caused by heart failure, called cardiogenic edema. Foot swelling caused by cirrhosis is called hepatogenic edema, and there are also kidney diseases, such as edema caused by nephrotic syndrome and chronic nephritis, called nephrogenic edema. In addition to these common diseases, there is hypothyroidism, that is, hypothyroidism, which can also cause foot swelling, and this kind of foot swelling, we call mucinous edema. In addition, venous insufficiency of the lower extremities in the elderly can also cause edema. Generally speaking, the diseases that cause foot swelling are mostly chronic diseases, and many chronic diseases can be effectively treated and do not immediately threaten the life of the patient. Therefore, it does not usually lead to immediate death.