Finger skin surface crusting may be due to dry weather, frostbite or chronic eczema and other reasons. 1. Dry weather: Due to the dry weather, no timely replenishment of water will cause the lack of water in the body, resulting in dry skin, which will cause hard skin and cracking of the fingers. 2. Frostbite: hands without any protective measures, long-term exposure to the cold air, may lead to local soft tissue frostbite, resulting in frostbite, the formation of hard skin, cracked fingers phenomenon 3. Chronic eczema: caused by the interaction of internal and external factors, due to chronic inflammatory stimulation, skin roughness and thickening, local itching, skin cracking and other phenomena, which can be manifested as finger crusting and cracking. If the patient’s finger skin surface crust symptoms are serious, or the symptoms continue and do not see improvement, should promptly go to the hospital, follow the doctor’s instructions standardized treatment.