The reason for loose stool with blood in the stool, but no pain in the anus, is that the bacteria inside the loose stool irritate the mucous membrane of the lower rectum, which leads to blood in the stool. At this time to regulate the stool, you need to take oral antidiarrheal drugs for antidiarrheal treatment, for example, you can choose montelukast or probiotics to regulate the intestinal flora, and then inside the anus to incorporate hemorrhoid drugs to stop the bleeding, such as hemorrhoid cream or hemorrhoid suppositories, can play a role in stopping the bleeding. Eat a light diet and avoid spicy and irritating foods as well as fried foods. Generally speaking, after the number of bowel movements is reduced, and if hemorrhoid medication is incorporated inside the anus to stop the bleeding, the symptoms of blood in the stool can be improved in about 2-3 days. If the symptoms do not improve significantly, it is recommended to go to the hospital to see a doctor for treatment.