Long frostbite can be treated with drugs and physical therapy under the guidance of a doctor, which has a better effect on the recovery of frostbite, as follows: 1. Physical therapy: infrared, helium-neon laser irradiation or laser point irradiation is mainly used to promote the healing effect of frostbite local scattered focus universal irradiation, while local topical application of purple cloud cream is more effective; 2. There is no obvious skin damage, you can apply urea vitamin E cream or frostbite cream to relieve, blisters and breakouts can be applied externally ichthyolite ointment and erythromycin ointment. Under the guidance of a doctor, herbal medicines that invigorate blood circulation and dispel cold can be used to adjust the body’s immune function and improve microcirculation for the purpose of treating frostbite. Patients with more serious symptoms can take oral dilators such as nifedipine and niacin to enhance the efficacy, or inject pulsatilla injection to dilate blood vessels, increase blood flow and improve microcirculation. In addition, patients should usually carry out sufficient skin warming, especially for the extremities, and avoid prolonged outdoor activities in the cold. It is also important to strengthen nutrition and physical exercise, such as running, to improve physical fitness, which can avoid frostbite to a certain extent.