The present invention relates to a novel composition for suppressing metastasis of cancer, and more specifically, to a composition for suppressing metastasis of cancer comprising flavonoids as active ingredients. The pharmaceutical composition for anticancer comprises a compound of chemical formula 1. According to the present invention, efficacy of kaempferol suppressing metastasis of cancer of TGF-beta1 in A549 which is lung cancer cell line is checked, and phosphorylation of Thr179 which is Smad3 connection domain as action mechanism can be controlled.본 발명은 신규한 암전이 억제용 조성물에 관한 것으로, 더욱 상세하게는 플라보노이들 유효성분을 포함하는 암전이 억제용 조성물에 관한 것이다.
