Nail cover empty a small piece, consider and nail trauma, lichen planus, nail fungal disease and other factors, can be treated by different diseases according to the choice of anti-infective, glucocorticoid, antifungal drug treatment and other ways. 1. Nail trauma: the patient’s nail cover has an empty piece, which may be caused by accidental nail smashing factors, and nail trauma factors, can be given iodine povidone coating disinfection, topical antibiotics such as fusidic acid treatment. 2. lichen planus: lichen planus can also lead to a small piece of nail cover empty, can be used topical prednisone, dexamethasone and other glucocorticosteroid drugs to improve the patient’s symptoms. 3. Nail fungus disease: nail fungus disease can also lead to nail cover analysis, become empty, patients in the diagnosis, can cooperate with the doctor oral itraconazole and other antifungal treatment. Nail cover empty a small piece may also have other reasons, should cooperate with the doctor as soon as possible to clarify the cause, and then do targeted treatment and therapy.