Rabbits were used for this experiment. One of the neighbouring arteries of the stomach was ligated and cut. Thus the distubance of bloodcirculation was made. Then the same amount of suspension of Brown-Pearce tumor was injected into the injured and the other intact part. In the former with local circulating a bigger tumor was built, which grew strongly. From this fact the author believes that, as one one the reason why the stomach cancer is more malignant in the lesser curvaure than in the greater curvature, the stasm of the stomach wall is Playing an important role.