The invention discloses an external traditional Chinese medicine composition for treating chronic eczema, and relates to the technical field of traditional Chinese medicine compositions. The external traditional Chinese medicine composition is prepared from the following traditional Chinese medicines in parts by weight: 10 parts of radix rehmanniae, 10 parts of radix scrophulariae, 10 parts of radix sophorae flavescentis, 10 parts of radix salviae miltiorrhizae, 15 parts of fructus psoraleae, 10 parts of cortex moutan radicis, 4 parts of semen lablab album, 4 parts of bighead atractylodes rhizome, 4 parts of poria cocos, 2 parts of liquorice root, 4 parts of radix platycodonis, 2 parts of semen nelumbinis, 2 parts of radix ginseng, 2 parts of fructus amomi, 3 parts of rhizoma dioscoreae, and 2 parts of semen coicis. The external medicine wine for treating chronic eczema prepared by the traditional Chinese medicine composition has the advantages that the external medicine wine is used for treating the chronic eczema for more than 10 years in clinical; after the medicine wine prepared by the conventional alcohol soaking method is used for two treatment courses, the healing rate reaches 86%, the obvious effective rate reaches 90.5%, and the effective rate reaches 95%.