The so-called three-stage training method is to artificially help children to develop the habit of regular bowel movements. The theory is that human physiological activity is governed by the so-called “biological clock”. The child will naturally feel like having a bowel movement on time and naturally control the bowel movement. The first stage: to be punctual, the first step is to sit on the potty regularly every day. The second stage: to have a quick bowel movement, wait for 5-10 minutes, if there is no bowel movement or no bowel movement, inject an open plug in the anus. The third segment: requires emptying, claiming to empty and then injecting a corkage. If the first segment is self-emptying, the second segment is dispensed with, and the third segment is injected directly after the self-reported emptying. If there is no fecal discharge after the injection of the third segment of the opener for three consecutive days, the third segment of the opener is exempted. In this way, exempt the second segment of the third segment of the open plug, and still strictly adhere to the first segment of the on-time sitting potty bowel movement. If you find that you cannot pass stool on time at any time, you can resume the second section immediately. After the exemption of the third segment, it is necessary to inject a plug-in after the stool from time to time every week, and check the emptying situation randomly, and resume the third segment if it is found that it is not emptied, until the third segment is stopped after three consecutive days of emptying. It takes about a year to form a solid habit with such strict training. Note: The above training methods must be combined with a dietary structure survey.