After the foot fracture should be soaked in cold water, about soaking time in 10-20 minutes, can help the injury of small blood vessels closed, to avoid further increase in bleeding, and lead to increased swelling, increased blood stasis, will lead to more obvious symptoms of pain, affecting the healing. Generally after 48 hours after the injury and then hot water immersion, through hot water immersion, can increase local blood circulation, promote the absorption of inflammatory metabolites, can effectively reduce inflammatory edema, promote the healing of the injury location, play a very important significance. Never use hot water after the foot fracture, because then the use of hot water will lead to further expansion of blood vessels, it will lead to a gradual increase in local exudation, increased bleeding, it will make the swelling more obvious, not conducive to healing. 48 hours later do not use cold water, because it will affect blood circulation, resulting in the accumulation of inflammatory metabolites, not conducive to its healing.