There is no fastest way to reduce swelling in the legs, and it needs to be decided according to the cause of the patient’s illness. Generally, the common causes are physiological phenomena and pathological phenomena, and the treatment includes general treatment and medication. 1. Physiological phenomenon: such as the leg swelling caused by strenuous exercise, need to soak feet in hot water, leg massage and so on to alleviate the phenomenon of leg swelling. 2. Pathological phenomena: ① leg swelling caused by a fall can be relieved by cold compresses, hot compresses on the leg after 72h, taking non-steroidal anti-inflammatory drugs such as celecoxib, meloxicam and so on. ② heart failure, symptoms of weakness and shortness of breath, swelling of the lower limbs, palpitations, etc., taking drugs such as bumetanide, torasemide, etc.. ③ Kidney disease can also have nephrogenic edema, take drugs such as furosemide and torasemide. There are many other causes of leg swelling, such as liver disease and deep vein thrombosis of the lower extremities. If the symptoms persist for a period of time without relief, it is recommended to go to the hospital, the above drugs need to be used under the guidance of a doctor.