Frostbite occurs in people who have been in a low-temperature environment for a long time and have poor peripheral circulation. In addition, when choosing shoes, try to choose shoes with thicker soles, breathable, if sweating, should be dried in time. 2, less hot water hot feet after many people have cold feet, like to use hot water to stimulate, feel comfortable. In fact, relative to the cold, alternating hot and cold is more likely to induce frostbite, should be warm and cool or warm water, so that the cold feet first adapt, and then gradually warm up. 3, more foot rub, more exercise, improve blood circulation can be some physical exercise, such as brisk walking, running, etc., more sunshine, ultraviolet light can also improve frostbite to some extent. 4, topical ointment can be used topical heparin sodium ointment to help local blood circulation, if there is a breakout, you can add the use of Bactrim. Frostbite is prone to recurrence, so it is important to understand the causes of flare-ups and develop good habits in order to better care and treat them.