Walking more leg acid, mainly for two reasons: 1, after walking too much muscle tension, fatigue, easily lead to local consumption of electrolytes, energy, nutrition more, so there will be acid, weakness, muscle tissue after over fatigue will produce more lactic acid and other metabolic products, when reached a certain level, stimulate the peripheral nerve will also appear leg acid symptoms. 2, after walking more metabolites, will further affect the peripheral blood vessels, the peripheral circulation is affected will lead to a gradual decline in the blood supply of small arteries, aggravating the lack of local energy, electrolytes, quality of nutrition, small veins are also contracted, will lead to a further slowdown of venous return, metabolites further accumulation, increase, will lead to the symptoms of leg acidity more obvious. Therefore, it is necessary to keep the muscles of the legs relaxed and rested, and to apply warm water bags to increase blood circulation, promote the metabolism of lactic acid, and relieve the symptoms of soreness. In addition, is to do a good job of keeping warm, not to appear to be cold.