There are two diseases to consider when there are small rice-grain bumps inside the anus: one is anal papilla hypertrophy and the other is rectal polyps. Anal papilla is a normal physiological structure that everyone has, but hyperplasia of the anal papilla results from chronic irritation of the intestinal inflammatory tract, which leads to hyperplasia of the anal papilla. If it is an enlarged anal papilla that needs to be surgically removed, the surgery is a very small and minimally invasive procedure that can be done under local anesthesia. Another disease is rectal polyps, rectal polyps usually do not have obvious symptoms, some patients may have increased frequency of stool, anal swelling, burning sensation in the anus and other clinical manifestations. If it is a rectal polyp it also needs to be surgically removed, regardless of whether it is an enlarged anal papilla or a rectal polyp. If you want to diagnose this disease, you can go to a regular hospital to see an anorectal surgeon for an electronic anoscopy. After surgery, you need to rest in bed and ensure a smooth bowel movement and a light diet to promote the recovery of the wound as soon as possible.