Swollen feet in the elderly should be determined early and accurately in order to find the fastest way to reduce swelling. Swollen feet in the elderly can be reduced by different methods according to the cause of the disease. Diuretics can be used for cardiac edema, anticoagulants can be used for edema caused by venous thrombosis, and sodium and water intake can be restricted for renal edema. 1. First of all, cardiogenic factors should be excluded as soon as possible caused by edema, cardiovascular diseases such as coronary heart disease history of patients, if no other chronic diseases, in the emergence of lower extremity edema should pay attention to whether there are other clinical manifestations, cardiogenic edema patients need to comply with the medical advice to take diuretics to reduce edema, and at the same time, actively treating cardiac disease. 2. The edema caused by lower extremity venous thrombosis can be treated with anticoagulants such as warfarin, and venous filters can be placed if the condition is serious. 3. For the elderly without cardiovascular disease, if the foot edema is caused by sedentary or long-term bedridden, etc., the lower limbs can be elevated at the same time appropriate exercise. 4. For hepatic edema, it is recommended to consult a doctor in time, monitor the amount of albumin, actively treat the primary liver disease, and appropriately supplement albumin, diuretic and nutritional support. 5. For nephrogenic edema, which usually starts from the face and gradually involves the lower limbs, diuretics can be taken or sodium intake can be restricted, and renal diseases can be actively treated. Regardless of the cause of foot edema, it is recommended that patients seek timely medical attention to clarify the cause and treatment.