It may be normal for a two-year-old baby not to poop for two days, which may be caused by constipation, or it may be caused by intussusception. The reasons are different, the treatment is different. 1. Physiological factors: If the two-year-old baby just occasionally appeared two days without poop performance, then it may be a normal phenomenon, as long as the third day the baby unloaded the stool, the stool is normal in character and color, then there is no need to worry too much. 2. constipation: if the baby recently eat less, drink too little water or eat too few vegetables and fruits, may lead to baby constipation, and then two-year-old baby two days without poop symptoms, this situation only need to let the baby drink more water, eat more vegetables and fruits can be improved. 3. intussusception: intussusception can lead to intestinal contents through the obstacle, which leads to intestinal obstruction, the disease can make two-year-old baby two days without poop symptoms, need to be treated through surgery. In addition to the above diseases, other causes can also lead to the symptoms of two-year-old baby did not poop for two days, it is recommended to consult a doctor in time to identify the cause and ask the doctor to deal with it. All of the above medications should be used under the guidance of a doctor, avoid self-medication.