The occurrence of frostbite is related to cold weather, but it is not the case that the colder the weather, the easier it is to grow frostbite. The occurrence of frostbite is also related to humidity, because being in a humid environment in cold weather can make people grow frostbite more easily than a dry and cold environment. Due to the combined stimulation of cold and humidity, it is easy to develop a limited, bruising, inflammatory skin disease at the terminal sites, i.e., frostbite. If the local skin is exposed to cold and damp conditions for a long time, the capillaries under the skin contract spasmodically, leading to tissue hypoxia and cellular damage, causing venous stasis for a long time and plasma infiltration into the subcutaneous tissue spaces, frostbite is likely to occur. At the same time, poor peripheral blood circulation, lack of exercise, sweaty hands and feet, and poor nutrition can aggravate the condition. The lesions are limited edematous purple-red patches or nodules that fade when pressed, and in severe cases there may be blisters that can break down to form ulcers, which are itchy, swollen and painful. It usually occurs in early winter and early spring, and is easily found at the end of the body’s circulation, such as the fingers, toes and ears. Treatment of frostbite is usually based on medication, including vitamin E ointment and frostbite cream, etc. For broken lesions, antibiotic ointment is available, and laser treatment is feasible if necessary. You should also pay attention to keeping warm and exercise on a daily basis to promote blood circulation and improve the body’s tolerance to cold and moisture, which can help prevent and relieve frostbite.