Objective:To investigate the morphologic influence of compound Qinglongyi capsules on apoptosis as well as to preliminarily study the basis for its growth inhibitory effect on human gastric cancer cell.Method: Preprocessing human gastric cancer cell SGC-7901 for 48 hours by setting 3 different drug concentration gradients 2.0×10-3

1.0×10-3

0.5×10-3 g·L-1 observing its effect on ultrastructure of SGC-7901 cell by transmission electron microscope;observing its effect on apoptosis of SGC-7901 cell by fluorescence microscope.Result: After dealing with human gastric cancer cell SGC-7901 with compound Qinglongyi capsules of different concentration for 48 hours

the result of transmission electron microscope showed that the drughad effect on the ultrastructure of SGC-7901 cell and indicated that it can induce apoptosis.The result of fluorescence microscope showed that with the increase of the dose

the apoptosis of SGC-7901 cells gradually increased in proportion after having been stained with Hoechest 33258 staining solution.Conclusion: Compound Qinglongyi capsule has obvious growth inhibitory effect on human gastric cancer cell SGC-7901

and it is probably able to induce apoptosis of cancer cells.