Sudden blood in the morning is a very common type of anorectal disease in the clinic, the main reasons include the following aspects: First, it may be hemorrhoids or anal fissure bleeding, hemorrhoidal bleeding most of the blood after defecation dripping in the toilet paper or toilet, anal fissure when the sudden blood in the stool may be severe pain, pain after the bleeding is more obvious, especially after constipation may bleed or pain is more obvious, second, for colonic polyps or colorectal adenoma bleeding, also often occurs in the morning blood, if the amount is large should promptly go to the regular hospital for detailed examination, can be found through the emergency colonoscopy or gastroscopy to find the blood. Polyps or colorectal adenoma bleeding, also often occurs in the morning blood in the stool, suddenly appeared in the morning blood in the stool, if the amount is relatively large should be timely to the regular hospital for detailed examination, can be found through the emergency enteroscopy or gastroscopy specific bleeding causes, and according to the cause of the bleeding of the system standardized treatment.