Five poops a day for a one and a half year old baby is generally considered abnormal. The normal number of bowel movements for a one and a half year old baby is no more than three times a day. Five times a day, considering the possibility of gastrointestinal dysfunction or gastrointestinal tract infections and other causes. 1. Gastrointestinal dysfunction: If the abdomen is cold or eat cold and spicy food, may cause gastrointestinal dysfunction, affecting the normal digestive function, the stomach food accumulation produces a lot of gas, but also hiccups, if there is abdominal distension, abdominal pain, need to go to the hospital. 2. Gastrointestinal infections: such as unclean diet, rotavirus enteritis, etc., at this time the baby will also be accompanied by fever, vomiting, abdominal pain, depression, off and other manifestations, at this time should be timely medical treatment, so as not to delay the condition. A one-and-a-half year old baby who poops five times a day is advised to seek medical attention and be evaluated and judged by a medical professional.