The present invention relates to a use of a banana pseudo-stem tender core extract for anti-breast cancer by applying an effective dose of the banana pseudo-stem tender core extract to a subject in need so as to achieve the effect of inhibiting the growth of breast cancer cells.本發明有關於一種香蕉偽莖嫩心萃取物於抗乳癌之用途,其係施予一有效劑量之香蕉偽莖嫩心萃取物於一所需個體以達到抑制乳癌細胞生長之功效。