The present invention relates to an antibacterial composition containing a natural extract. The antibacterial composition of the present invention includes a Cirsium sp. plant extract as an active ingredient. A Cirsium sp. plant is selected from a group consisting of Cirsium pendulum, Cirsium japonicum, Cirsium vulgare, Cirsium canum, Cirsium pyrenaicum, and Cirsium arizonicum. [Reference numerals] (AA) Control group(BB) Treatment group of Circii Radix extract본 발명은 천연 추출물을 포함하는 항균용 조성물에 관한 것이다.