Abstract：Mite dermatitis is one of the common dermatologic diseases in rural clinics in summer and autumn. Through the statistics of the onset season and age of patients，it was found that the incidence of mite dermatitis was mainly among rural children and adolescents from May to September each year，which was closely related to the climate and environment factors of "damp，heat and yin toxin." We used interior and exterior treatment of damp-heat clearing method combined with decoction of moxa，and its effect was satisfactory. We also put forward some opinions on the classification of mite dermatitis into the section of "insect bite dermatitis" in textbooks of Chinese medicine. It is suggested to make a separate section of mite dermatitis in Dermatology of Chinese Medicine and Criteria for Diagnosis and Therapeutic Effect of Diseases and Syndromes of Chinese Medicine，and its proper standard name should be "itchy syndrome of millet and grass".