Layering of baby nails may be caused by malnutrition, micronutrient deficiencies, fungal infections, nail trauma, and nail peeling disease, etc., and you should consult a doctor in time to clarify the cause of the disease. 1. malnutrition: malnutrition can easily lead to insufficient nutrients in the nails, resulting in a variety of abnormal symptoms, the main common ones are thinning nails, cloudy, deformation, fragile, layering, as well as the surface of the nails is uneven, loss of luster, roughness, and so on. 2. Micronutrient deficiencies: babies with long-term iron and calcium deficiencies are prone to nail layering. 3. Fungal infection: Fungal infection of the nails will also cause symptoms of nail layering, mainly because the fungus attacks the nails, which will easily cause onychomycosis, and the nails will be separated, discolored, shriveled, peeled off, buckled and other abnormal symptoms. 4. Nail trauma: Nail trauma can easily involve the internal tissues of the nails, leading to abnormal symptoms of nails in babies, such as nail layering, whitening and peeling. 5. Nail peeling disease: Nail peeling disease is easy to damage the nails, resulting in the baby to appear a variety of uncomfortable symptoms, such as nail peeling, nail transverse cracking, nail layering and so on. Baby nail layering should be timely medical treatment, parents should follow the doctor’s instructions and actively cooperate with the doctor to treat the baby, do not blind treatment, so as not to delay the condition or cause adverse reactions.