Frostbite is a relatively common skin disease in winter. It is commonly seen in children, women and those with poor peripheral blood circulation, usually due to cold stimulation, causing local vasospasm, hypoxia and stasis of blood, resulting in local tissue inflammatory infiltration. The disease has a long course and tends to recur in winter, which not only affects the patient’s aesthetics but also brings great inconvenience to life. The triggering factors for frostbite usually include local sweating, humidity, anemia, lack of exercise and certain chronic diseases, and its onset is closely related to temperature changes and occupational working environment. Frostbite mostly occurs on the extremities and exposed areas, such as the fingers, back of the hands, face, ears, toes, foot edges and heels. The initial manifestation of frostbite is localized skin redness and swelling with itching, especially when the surrounding temperature rises, followed by purple coloring and tingling when exposed to cold water, with some blisters forming and breaking down to form vesicles and ulcers, which may leave pigmentation after healing. The disease is slow and can heal on its own when the temperature rises, but is prone to recurrence. For those who have not yet had frostbite or have had frostbite in the past, attention should be paid to prevention. When the temperature drops, attention should be paid to keeping warm, such as using masks, gloves, and ear muffs when going out, and choosing the right size of shoes and socks, not too tight and too small; secondly, moisture is also important for frostbite prevention. In addition, strengthening nutrition and physical exercise and avoiding long-term immobility of the limbs can improve the body’s ability to adapt to the cold environment, and massage and warm water baths can be performed frequently on frostbite prone areas to improve local blood circulation. For those who have frostbite, they should go to the dermatology department of a regular hospital in time. If the skin is not broken, topical heparin frostbite ointment can be used, while if the local skin is broken and there is purulent discharge, boric acid solution can be applied wet to keep the area dry and anti-infection treatment can be given if necessary.