As the saying goes, nine out of 10 people have hemorrhoids, but blood in the stool is sometimes not entirely caused by hemorrhoids. Especially for gay men, over 40 years old, if you have blood in the stool, you must pay attention to the possibility that there could be a large intestinal tumor. In this case, it is necessary to go to a regular hospital and find a gastroenterologist or a doctor specializing in anorectology to diagnose some benign tumors such as adenoma, which can also cause blood in the stool. But the worst possibility is that intestinal cancer can also cause blood in the stool. First of all, we should carefully observe the color of the blood, if the color of the snow is bright red, most of them are caused by hemorrhoids, but there are also a small number of tumors, if it is bright red, it means that it is closer to the anus, if the color of the blood, turn purple, or mixed with the stool, in such cases, most of them are colon problems. So we should pay attention, take precautions, must go to the hospital to do a colonoscopy, outpatient to find a specialist to do an anal finger examination. To do early detection, early diagnosis, early treatment.