The main problem with congenital megacolon is that the distal end of the bowel, that is, certain parts of the colon, which in severe cases can be the whole colon, or the sigmoid colon or the rectum, is localized to the absence of ganglion cells, and there are no ganglion cells and no normal nerve function. So this section of the bowel will have a continuous spasmodic state, resulting in dilatation of the proximal bowel, called congenital megacolon. The main manifestation is the manifestation caused by obstruction, which can be abdominal distension, nausea, vomiting, and in severe cases, enteritis and bloody stools can occur. Therefore, the main manifestations of this lesion are that the child has difficulty in passing stools, the frequency of bowel movements is relatively low, and the intervals between bowel movements are relatively long. The main manifestation is abdominal distension and pain, which leads to nausea, vomiting and a series of obstructive manifestations. Once this kind of manifestation of megacolon occurs, especially the newborn’s abnormal bowel movement, with the growth of the age of abdominal distension, stool reduction, nausea, vomiting, nutritional development is affected, it is often time to consider whether it is congenital megacolon, and to go to the hospital to do some examination. General more professional expert doctors, through a simple anal fingerprinting can be clearly diagnosed, it can be early diagnosis, early treatment, to avoid serious consequences.