The common reasons for feeling something blocking the anus are dry stool, rectal prolapse, hemorrhoids, rectal cancer, etc. The diagnosis can be clarified through abdominal ultrasound, anoscopy, e-colonoscopy and other related examinations. If there is a combination of blood in the stool, pain and other discomfort, consider the possibility of hemorrhoids. If there is a lump that moves with the contraction of the anus, rectal prolapse is more likely. If there is chronic constipation, consider the possibility of dry stool. If there is a combination of blood in the stool, change in bowel habits, painless swelling, weight loss, anemia and other discomforts, rectal cancer is more likely to be considered. Normally, you can drink more water, eat a light diet, eat more vegetables and fruits, develop the habit of regular bowel movement, exercise appropriately, and massage the abdomen to keep the bowel movement smooth.