The use of ice after a broken foot instead of more pain, the following reasons are common: First, after a broken foot should not use 100% ice for cold compresses, but need to use ice and water mixture for cold compresses to ensure that the cold compress is 0 ℃. If you use ice for cold compress, it will lead to frostbite of the soft tissues at the injury site, but make the pain symptoms increase, which is not conducive to recovery. Second, the use of ice for cold compresses after foot trauma will make the vasoconstriction significantly worse, which is not conducive to the rapid discharge of local inflammatory metabolites, and therefore will stimulate the nerves and cause severe pain symptoms. To sum up, you can use ice and water mixture for continuous cold compress after foot fracture, but not use ice for continuous cold compress, ice can only be intermittent cold compress, each cold compress time should not exceed 20-30 minutes, otherwise it will make the symptoms aggravated.