Anal swelling after meals may be associated with gastrointestinal disorders such as proctitis and dysentery. Proctitis is an inflammatory lesion that occurs in the submucosa of the rectum and the tissues surrounding the rectum. Typical symptoms are abdominal pain and difficulty in defecation. At the same time, because the visceral nerve innervates the lower part of the rectum, so when suffering from proctitis, due to inflammation stimulation leads to localized swelling sensation is more obvious. In this case, it can be treated with drugs such as cefuroxime, acyclovir, ibuprofen extended-release tablets, and mesalazine suppositories. Dysentery is an infectious disease of the intestinal tract with typical symptoms of frequent bowel movements, abdominal pain, anal swelling, pus and blood. Due to the intestinal disease caused by bacterial infection, the increased frequency of bowel movements can lead to a sensation of swelling in the anal area. Commonly treated drugs include antimicrobial drugs such as norfloxacin and ofloxacin. If you find that the anus is swollen after meals, you should consult a doctor in a timely manner, under the guidance of the doctor after a clear diagnosis of the treatment, do not take medication without authorization, so as not to delay the condition. Pay attention to rest on weekdays, quit smoking and drinking, and maintain a regular routine.