Abstract: Allergic rhinitis is one of the common allergic diseases in children.Its incidence is increasing year by year in the world. The disease can not be cured and easy to relapse, bringing trouble and burden to the children and their families. As an effective therapeutic method, external preparation of traditional Chinese medicine is especially suitable for clinical application in pediatrics. The author summed up the clinical application of external preparation of traditional Chinese medicine in the field of children allergic rhinitis and its possible mechanisms that works by searching the literature of clinical and experimental studies. Moreover, the advantages and problems of this way to treat this disease in children were also analyzed, so as to provide some references for clinical practice.