Traditional Chinese medicine external washing agent for treating chronic perianal eczema and nursing method

The invention aims to provide a traditional Chinese medicine external washing agent for treating chronic perianal eczema. Chronic perianal eczema is a common allergic disease, and main clinical presentations of chronic perianal eczema are severe local skin itching, skin lesion surface roughness, hypertrophy, lichenification, depigmentation and anal skin fissure. The traditional Chinese medicine external washing agent is prepared by selecting the following traditional Chinese medicines: engler abelia, spreading hedyotis herb, thymifoious euphorbia herb, herb of fortune silene, commen bomhax flower, root or bark of gluey litse, all-grass of siam falsenettle, herb of twinflower groundsel, stem of littleleaf rourea and purpleflower holly leaf. By virtue of clinical tests, the traditional Chinese medicine external washing agent provided by the invention has the total effective rate of 90.0%, and is significant in curative effects.