Provided is a novel use of an alcohol extract of Taraxacum officinale. The novel use of the alcohol extract of Taraxacum officinale of the present invention offers advantages of treating, alleviating, and/or preventing endometriosis. The present invention additionally provides a pharmaceutical composition for treating or preventing endometriosis containing the alcohol extract of Taraxacum officinale as an active ingredient.본 발명은 포공영 알콜추출물의 신규 용도를 제공한다. 본 발명에 의해 자궁내막증을 효과적으로 치료, 개선 및/또는 예방할 수 있다는 장점이 있다.
