A 2-year-old child defecates once every 3 days, if the stool is normal and there is no other discomfort, it is a normal phenomenon, if the stool is dry and painful to defecate, it is considered to be caused by constipation, which is an abnormal phenomenon. 2-year-old child defecation once every three days, parents should pay attention to observe the nature of the stool, if the banana-like, soft and hard texture moderate, and the child defecation without pain and other symptoms of discomfort, is a normal phenomenon, and more with the child to eat less or the diet structure is not reasonable. Parents need to give their children a reasonable diet. If the parents found that the child’s stool was hard or granular, hard texture, and the child defecation with pain, defecation difficulties and other phenomena, considered by the constipation caused by abnormal phenomena, need to change the child’s diet, eat more fresh fruits and vegetables, and increase the amount of drinking water, but also comply with the doctor’s advice to use such as bacillus subtilis bacillus granules and other regulators of intestinal flora, to alleviate the symptoms. If a 2-year-old child has a bowel movement once every three days, accompanied by uncomfortable symptoms, he or she should go to the hospital immediately and actively cooperate with the doctor’s treatment.