Tummy pain with anal pain, clinically possible causes are eating spicy stimulating food, acute gastroenteritis, rectal anorectal inflammation and so on. 1. Eating spicy stimulating food: some people prefer to eat spicy stimulating food such as chili peppers, if you eat too much, which excessive capsaicin will cause gastrointestinal mucosal stimulation and abdominal pain, abdominal burning sensation, a small amount of non-absorbable capsaicin will also be with the food residue to reach the anus, which leads to such people in the defecation of the anus will also have pain, burning pain and other symptoms. 2. Acute gastroenteritis: this condition refers to a variety of causes of acute inflammation of the gastrointestinal mucosa, which is usually associated with food allergies, eating unclean food and other factors, the clinical manifestations of abdominal pain, diarrhea, nausea, vomiting, etc., when the people suffering from diarrhea for many times in the case of mucus stimulation in the anus will also be itchy, pain and other symptoms. 3. Rectal canal inflammation: the situation refers to the lower end of the rectum and the anal canal and other parts of the inflammatory reaction, which is usually associated with overeating, irregular diet, etc., the clinical manifestations of pain in the lower abdomen, anus, foreign body sensation, swelling, pain, itching and so on. It is recommended to go to the regular hospital to do examination, clear cause for targeted treatment.