The elderly foot back pain, including the following causes: first, dorsalis pedis muscle strain, dorsalis pedis muscle is relatively weak, including the small muscles to extend the bunion and extend the 2nd-4th toe, the elderly muscle atrophy gradually, muscle strength is not enough, prolonged walking can lead to dorsalis pedis muscle strain, manifested as dorsalis pedis soreness symptoms, the use of hot water foot soak can accelerate the dorsalis pedis muscle blood circulation, relieve dorsalis pedis pain symptoms, the water temperature required to maintain The water temperature should be kept at 38-42℃ for 30 minutes each time, 1-2 times a day; secondly, gout, with a history of increased serum uric acid, and acute attacks of gout induced by exertion or alcohol consumption, manifesting as redness and swelling of the dorsal foot, painful symptoms are usually more intense, and patients are often unable to walk normally, and still have painful symptoms in the dorsal foot when resting.