The treatment of swelling in the legs of the elderly should be based on different causes and different methods should be chosen. Common causes include lower extremity venous thrombosis, nephrotic syndrome, heart failure, etc. The treatments include general treatment, medication and surgery. 1. Lower extremity venous thrombosis: bed rest, elevation of the affected limbs, etc.; use of anticoagulants such as low molecular weight heparin, etc., thrombolytic drugs such as streptokinase, etc.; surgery is needed to remove the thrombus in case of bruising. 2. Nephrotic syndrome: bed rest, low-sodium and low-salt diet, etc.; oral diuretics such as hydrochlorothiazide combined with spironolactone, etc.; dialysis therapy when drug treatment is ineffective. 3. Heart failure: active treatment of the primary disease, strict restriction of sodium, water intake; the application of diuretics furosemide, bumetanide and so on. If the elderly leg swelling, it is recommended to go to the hospital in a timely manner, improve the examination, clarify the cause of the disease, standardized treatment under the guidance of the doctor, the above drugs need to be taken under the guidance of the doctor.