This document summarizes a study on the effect of resveratrol on human breast cancer (MCF-7) cell lines. The study found that resveratrol inhibited the viability of MCF-7 cells in a dose-dependent manner, with an IC50 value of 125μM. Tests showed that resveratrol induced apoptosis in MCF-7 cells, as evidenced by cellular morphology changes, DNA fragmentation, and activation of apoptotic proteins like t-Bid and cleavage of α-fodrin. The study concludes that resveratrol shows potential as a promising drug for cancer treatment based on its ability to selectively induce apoptosis in cancer cells.