Children’s split nails in layers cannot be ruled out due to gray nails, also known as onychomycosis, which can be relieved by topical medication, systemic medication, and non-pharmacological treatments. 1. Topical medication: topical medication is often chosen as antifungal medication, such as miconazole and ketoconazole. 2. Systemic medication: patients in the topical application of drugs at the same time, if necessary, but also through oral terbinafine, itraconazole and other antifungal drugs, to increase the therapeutic effect. 3. Non-pharmacological treatment: In the case of split nails, it is necessary to cooperate with the doctor to carry out nail extraction or removal of diseased nails, but surgical extraction of nails is more damaging. At the same time, you can also cooperate with the doctor to choose photodynamic therapy, through the red light irradiation, can kill the pathogenic microorganisms, to achieve the therapeutic purpose. It is recommended that children with split nails should be examined and treated by a doctor as soon as possible to avoid delays.