Whether colonoscopy can replace anoscopy needs to be done accordingly for different diseases. Enteroscopy is suitable for unexplained diarrhea, gastrointestinal bleeding, bloody stools and other conditions, or when a clear diagnosis is needed when chronic colitis is suspected. If the patient has fewer localized anal symptoms, colonoscopy can be used instead of anoscopy. Anoscopy is a good aid in the diagnosis of internal hemorrhoids, anal fissure, sinusitis, proctitis and other diseases. When there is blood in the stool, lower abdominal pain, urgency and heaviness and other discomforts, you need to do anoscopy, clear diagnosis and then active treatment. If the patient’s localized pain in the anus is more obvious, usually need to do anoscopy, not enteroscopy. When doing enteroscopy and anoscopy, you need to relax and cooperate with the doctor’s examination.