Children’s gray nails are caused by fungal infections and generally do not heal on their own, and should be treated promptly with antifungal medication or surgery. Children’s gray nails may be caused by contact with dermatophytes, yeasts and other fungi from family members or the outside world. Gray nails are contagious and show symptoms such as separation and thickening of the nail plate at the onset of the disease. Only rely on their own immunity usually can not be self-healing, so once found, the need for timely medication, you can use some antifungal drugs such as fluconazole, etc., or use surgical treatment. After the discovery of gray nails, children should go to the hospital in time, under the guidance of professional doctors to carry out reasonable treatment, daily life, you should pay attention to hygiene, change shoes and socks diligently, do not change shoes with other people, and do a good job of personal hygiene and protection.