Abdominal pain after colonoscopy is usually caused by irritation of the intestinal wall or water injection or insufflation, which is generally normal and requires no special treatment. However, if abdominal pain is caused by intestinal injury or intestinal perforation, and bloody stools or black stools continue to appear or the symptoms of abdominal pain gradually worsen, treatment must be carried out in a timely manner under the guidance of a professional doctor to avoid delaying the condition. Common causes and treatment 1, the normal situation: colonoscopy, the inspection probe needs to be inserted from the anus into the intestine, may be stimulated to the intestinal wall, resulting in pain. And before the examination, the intestine usually needs to be injected with appropriate amount of saline or filled with sufficient amount of gas to help the examination, which may lead to abdominal discomfort or abdominal distension and pain. If the patient is sensitive to pain and cannot tolerate it, painkillers can be used in appropriate amounts under the guidance of the doctor to relieve the pain; 2, intestinal injury: during the intestinal examination, if the patient’s intestinal wall is thin, it may lead to damage to the patient’s intestinal wall, and in severe cases, intestinal perforation may occur. It can often cause severe abdominal pain and can be accompanied by black stools, bloody stools, plate-like tonicity of the abdominal muscles, and peritoneal irritation signs and other symptoms. In this case, it is necessary to seek medical attention and choose an appropriate treatment plan according to the specific situation under the guidance of a doctor. If the intestinal perforation leads to mild and short-lived abdominal contamination, direct repair of the intestine can be considered; however, if the abdominal contamination is more severe, an enterostomy is required before surgical radical treatment according to the disease condition. Precautions Usually the patient’s pain can be relieved on its own after 2-3 days. If the pain is tolerable, no special treatment is needed, a light, easy-to-digest diet, try to choose easy-to-digest foods such as rice porridge and egg custard, and avoid smoking and alcohol, and prohibit greasy and spicy foods such as lard and chili, or gas-producing foods such as milk and soy, so as not to aggravate the pain symptoms.