The present invention relates to a composition comprising green tea extract as an active ingredient. The composition is effective in treating or preventing obesity and the like and can be beneficially employed in various ways in fields such as foodstuffs and medicines.Linvention concerne une composition contenant un extrait de thé vert en tant quingrédient actif. La composition est efficace pour le traitement et la prévention de lobésité et similaires, et elle peut être avantageusement utilisée de différentes manières dans des domaines tels que les denrées alimentaires et les médicaments.본 발명은 녹차 추출물을 유효성분으로 함유하는 조성물에 관한 것이다. 상기 조성물은 비만 등의 치료 또는 예방에 효과적이며, 이를 식품 및 의약 분야 등에서 다양하게 활용 가능하다.