The appearance of horizontal lines on the nail cover may be related to nail trauma, psoriasis, nail lichen planus and other factors, and the main treatment is to address the cause of the disease, such as the administration of immunomodulators, glucocorticoid drug therapy and so on. 1. Trauma: When the nail bed and nail plate are damaged by trauma, the newborn nails will have transverse lines or abnormal morphology. This situation generally does not need too much treatment, with the continuous growth of the nails, the transverse lines part of the nail will be gradually replaced. 2. Psoriasis nails: when psoriasis involves the nails, it will lead to pitting depression, transverse grooves, nail separation and so on on the surface of the nails. This situation can be given some immunomodulators (tacrolimus), glucocorticoid drugs (betamethasone) treatment. 3. Nail lichen planus: when lichen planus involves the nails, it may cause damage to the nail bed, which may be manifested as thinning of the nail plate, longitudinal ridge of the nail plate, transverse lines or roughness and so on in Changzhou today. This condition can be treated with glucocorticoid drugs for sealing, commonly used drugs such as tretinoin. Due to the chronic onset of the disease, generally does not have a serious impact on the body, if necessary, timely medical treatment, be sure to strictly comply with the doctor’s prescription medication.