Objective : ${ulcorner}$Wai-Tai-Mi-Yao${lrcorner}$ had been made by Wang-Dao(王燾) in Tang Dynasty(唐朝). It included not only in those days medical knowledge, but also before medical knowledge. So it is regarded as important classic in the oriental medicine. And there are various bathing therapy methods. Therefore we would like to bring out use sphere and detailed method of bathing therapy in Tang Dynasty and before period. Methodologies :We have researched bathing therapy of ${ulcorner}$Wai-Tai-Mi-Yao${lrcorner}$ according to below the procedure. (1) Making a related words list: We have used existing external treatments technical books to make a list. The list is consist of 23 words and includes not only technical terms, but also general terms. (2) Searching sentence: We have searched sentence that contain terms that related with bathing therapies. (3) Analysis of related sentence: We have searched and classified sentence by disease. Conclusions :(1) ${ulcorner}$Wai-Tai-Mi-Yao${lrcorner}$ has described 15,180 records. Bathing therapies of ${ulcorner}$Wai-Tai-Mi-Yao${lrcorner}$ had been used to cure 726 records from the whole volume. The contents account for 4.8% of the whole volume. (2) ${ulcorner}$Wai-Tai-Mi-Yao${lrcorner}$ has described 1,104 diseases. Bathing therapies of ${ulcorner}$Wai-Tai-Mi-Yao${lrcorner}$ had been used to cure 293 diseases from the whole diseases. The contents account for 26.5% of the whole volume. (3) These diseases belong to dermatologic, internal, ophthalmic, otolaryngologic, obstetrics, gynecologic, pediatric, surgical and veterinary diseases.