General anesthesia for colonoscopy does not usually damage the brain, but anesthesia accidents and surgical risks may occur. General anesthesia for colonoscopy is taken as a painless colonoscopy, and the anesthesia does not affect the brain. However, anesthesia drugs often have certain side effects, after the anesthesia stops, the residual anesthesia drugs may cause dizziness, headache and other discomfort. There is a possibility of anesthesia accidents, but the chances of them occurring are relatively small. However, relatively speaking, colonoscopy for general anesthesia on the patient’s pain is relatively small, the patient in the whole process generally do not feel obvious pain, the examination process there may be operational errors, triggering the risk of perforation or bleeding. In addition, enteroscopy before general anesthesia examination must first go to the hospital, with the doctor to do the relevant pre-test preparation project, check the contraindications to anesthesia and surgery.