Capsaicin on gastric cancer cells have significant growth inhibition and induction of apoptosis in a dose-and time-dependent manner, mainly through the regulation of Bax, Bcl-2 and C-myc protein expression to achieve. Capsaicin dose relationship manner to reduce the cell viability of the human colon, capsaicin also cause the fragmentation of the changes in cell morphology and DNA, DNA content decreases, phosphatidylserine shift, wherein phosphatidylserine of the shift marks cells apoptosis. The mechanism of capsaicin-induced apoptosis may be semi-caspase 3 (a major apoptosis-inducing enzyme) activity is enhanced. At present, the international community about the effects of capsaicin on gastrointestinal health research relatively large, but its mechanism of action is relatively weakFree Web Content, especially affect the outcome of colorectal cancer and its mechanism should be further explore.