The pathological change of congenital megacolon is the absence of ganglion cells in the intestinal wall, and the final solution of all kinds of radical surgery is to remove the diseased intestinal segment and anastomose the proximal colon with the end of the rectum. The so-called bowel incontinence in such patients is in fact foul stool, leakage of stool, not the real sense of bowel incontinence, for a few of this phenomenon of foul stool leakage after megacolon surgery, there are generally the following situations: 1, patients do not know they have stool, so when there is fecal matter to reach the rectum, can not produce stool, the external sphincter is too late to produce a contraction response, so This is mainly due to the malfunction of the internal sphincter, which has a dull sensation; 2, some patients can feel the presence of feces, can produce the intention to defecate, but when they want to contract the external sphincter, the feces has already been defecated, this part of the patient is relatively light compared to the first category of patients, the main reason is that the nerve reflex is not sensitive enough, probably due to the nerve afferent or efferent pathway; 3, the patient does not know that he or she has stool. The last category is the one that can produce bowel movement and contract the external sphincter, but due to the insufficient strength of the external sphincter or the shortening of the length of the anal canal high pressure area, it is not able to achieve the purpose of controlling defecation, thus leading to defecation. These three categories are the main causes of “fecal incontinence” after megacolon surgery. In response to the above causes, we have developed targeted treatment means, applying body surface transcutaneous electrical stimulation technology and targeted biofeedback therapy technology to treat post-operative fecal incontinence of megacolon, with very satisfactory results and an efficiency rate of more than 80%, and after nearly 10 years of clinical practice, we have developed a complete system for the evaluation and treatment of such patients. Transcutaneous electrical stimulation is to stimulate the reflex area of the center of bowel control on the body surface, and stimulate the sphincter around the anus to train the sensitivity of the internal sphincter and the afferent and efferent sensitivity of the pelvic floor plexus, while keeping the external sphincter in a state of tension and maintaining the tension of the external sphincter to achieve the purpose of bowel control; this method is similar to the electronic acupressure in Chinese medicine, which is done through the body surface, safe, non-invasive and painless. Biofeedback is a new type of treatment, mainly through the instrument to make patients achieve visual, auditory, anal sphincter, pelvic floor muscles and the brain to form a fixed mode of thinking, strengthen the role of control of defecation, safe, no side injury, no pain; specific methods are: transcutaneous electrical stimulation of lumbar 1-2, sacral 2-4, internal anal electrodes (some cases Department adjustable), each part 2000 times, the current intensity adjustable; biofeedback half an hour, the cost of 264 yuan per day, the course of treatment 2-4 weeks.