Children’s toenail cover is empty may be related to trauma, onychomycosis, psoriasis and other pathological factors. 1. trauma: such as toenail by foreign objects collision, extrusion damage, resulting in nail bed atrophy and toenail cover empty symptoms. 2. Tinea pedis: if children’s toenails are infected with fungi causing damage to the nail plate, tinea pedis can be manifested as symptoms of empty toenails. 3. Psoriasis: mostly related to heredity, environmental factors, etc., can cause children’s toenails to appear abnormal lesions, which can be manifested as toenails appearing point-like depression, the cuticle under the nail is abnormally shed to form the empty state. Children’s toenail cover is empty, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.