The correct way to use ice after a broken foot is as follows. First, you should use an ice-water mixture and do not use ice cubes, the temperature of the ice-water mixture always remains 0°C, while the temperature of the ice cubes will be lower than 0°C. The use of ice water mixture for cold compresses does not produce frostbite, while ice cold compresses tend to cause frostbite on the skin. Two methods can be used in the process of icing: first, intermittent icing, 30 minutes/time, 6-8 times/day; second, continuous icing, which means that ice is always used as long as the patient remains awake. Ice should not be used during sleep, as the patient is not sensitive to low temperature during sleep, which can easily cause local frostbite. Therefore, ice should be used correctly after a broken foot in order to give the best therapeutic effect.