Children’s skin ringworm commonly have tinea corporis, lichen planus, etc., can be distinguished by its typical clinical manifestations and auxiliary examination. 1. Tinea corporis: at the beginning, it is usually red papules, blisters, etc., and then there is flaking, and then it expands to the surrounding area to become ring-like lesions, and the center gradually fades away, and it is usually single, accompanied by itching, and mycelia and spores can be seen in fungi microscopic examination. 2. lichen planus: caused by malassezia infection, occurring on the chest and back, face and neck, manifested as a clear border of hypopigmented or light brown rash, with a few scales on the surface, this disease is heavy in summer and light in winter, usually without conscious symptoms. Fungal microscopy can be seen mycelium and spores, Woo lamp can be seen yellow-green fluorescence. If the child suffers from dermatophytosis, should go to the hospital, diagnosis is clear, targeted treatment.