Nail edge peeling and cracking may be caused by vitamin deficiency, chemical irritation, ringworm and other reasons. 1. Lack of vitamins: it may be caused by the patients’ lack of vitamins, such as the lack of vitamin C will lead to serious peeling and cracking at the edge of fingernails. 2. Chemical irritation: long-term exposure to chemicals, such as detergents, laundry detergents, etc. or long-term application of nail polish, etc., leading to chemical ingredients to stimulate the skin around the nails, resulting in irritation, leading to the edge of the fingernail peeling, dry cracking. 3. Ringworm: This is a disease caused by skin fungus infection of the skin of the hands. If the skin at the edge of the patient’s nails is infected by fungi, it may lead to localized flaky and itchy skin, which is manifested as peeling and dry cracking at the edge of the nails. Cause the edge of the nail peeling cracking is likely to be eczema, psoriasis, etc., the patient should go to the regular hospital dermatology consultation, clear cause, under the guidance of the doctor targeted treatment.