Children two or three days a stool, if the stool is normal, not accompanied by discomfort is generally normal; if the stool is dry, difficult to defecate for constipation; if the defecation time is significantly longer than before need to be alert to intestinal obstruction and other diseases. 1. Normal phenomenon: the nature of the stool than the interval between stools, the number of more meaningful, therefore, the child two or three days a stool, if the bowel movement is smooth, no abdominal pain, abdominal distension and other discomforts, stool soft, stripes is a normal phenomenon. 2. Constipation: If the child is less frequent than the daily regular bowel movements, accompanied by dry stools, lumps, bowel crying, abdominal distension and other discomforts, it is constipation. 3. Intestinal obstruction: in addition to the child due to the gastrointestinal tract development is not perfect, but also often intestinal obstruction, manifested as abdominal pain, abdominal distension, anal stopping gas, defecation and so on. Children two or three days a stool, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to determine the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.