Children’s nails do not grow may be nail biting fetish, malignant malnutrition, congenital nail atrophy and other diseases. 1. Nail biting fetish: If the child has nail biting fetish, often repeatedly gnawing the nails, resulting in nail deformation, to a certain extent, it will lead to the free end of the nails are destroyed, and then easy to appear nails do not grow or slow growth of the situation. 2. Malignant malnutrition: this disease refers to a variety of reasons leading to the serious lack of protein intake in the body of the affected children, can not meet the normal needs of the body, the children will appear wasting, muscle atrophy, edema, and slow nail growth and other symptoms, which can be manifested in a short period of time, there is no significant growth of nails. 3. Congenital nail atrophy: studies have shown that the occurrence of this disease is related to ectodermal dysplasia, dystrophic herpetic epidermolysis bullosa, palmoplantar keratosis and other reasons, some children may not grow nails. When you find that your child’s nails do not grow, you need to go to the hospital in time to improve the relevant examination to clarify the specific causes.