Frostbite is common in winter and is caused by cold weather. It is a recurrent erythematous and swollen local skin damage, and in severe cases, blisters and ulcers may appear. I. Treatment of frostbite 1. Systemic treatment Oral nicotinamide, nifedipine and other vasodilators. Or add salvia (20ml) to 500ml of low-molecular dextrose drip, which has the effects of vasodilation, improving microcirculation, increasing blood flow and thrombosis. 2, local treatment Available helium-neon laser and infrared irradiation, or laser point irradiation (foot Sanli, Fuyao, etc.) after local scattered focus universal irradiation of frostbite. If the frostbite is not broken, you can use compound heparin ointment, polysulfate mucopolysaccharide cream, vitamin E ointment, etc. The affected area can be soaked in the decoction of Gui Zhi for 20-30 minutes three times a day, rubbing the affected area with the dregs of the medicine while soaking. (The formula consists of 20g each of cinnamon stick, safflower, sophora, perilla leaf and thorny root, add 3000ml of water, decoct and use after a little cooling. (For those who have broken down, use 5% boric acid ointment, 1% erythromycin ointment, etc.). The prevention of frostbite 1, strengthen exercise, promote blood circulation, improve the body’s ability to adapt to the cold; 2, pay attention to anti-freezing, warmth to prevent moisture, do not wear tight shoes and socks; 3, should not be immediately after the freezing with hot water or fire baking; 4, accompanied by other related diseases should be actively treated; 5, for recurrent frostbite, can be used before winter with a sub-red amount of ultraviolet or infrared irradiation of local skin, to promote local blood circulation. Promote local blood circulation.