One and a half years old baby three or four times a day stool is mostly abnormal performance, and the baby cold, dietary structure unreasonable and gastrointestinal diseases and other factors related to the need to identify the causes of the implementation of symptomatic conditioning or medication as soon as possible. As one and a half year old baby digestive system development is relatively perfect, the normal number of bowel movements per day is one to two, if three or four times a day, most of the abnormal phenomenon, parents need to find out the specific causes. If it is due to eating cold food, abdominal cold, wearing too thin clothes, etc., need to eliminate the triggering factors, to help the baby to improve the symptoms. If it is caused by gastrointestinal diseases, such as dyspepsia, acute and chronic gastroenteritis, etc., need to consult the doctor in time, if the bacterial infection, such as cefixime and other antibacterial drugs can be taken orally, if the viral infection, can not be special medication. Also oral compound pepsin powder to help digestion, montelukast to stop diarrhea and other symptomatic treatment to promote the baby’s early recovery. It is recommended that parents should strengthen the daily care of one and a half year old babies, avoid the interference of undesirable factors, and find abnormalities in a timely manner to avoid delays in the condition. The above medication should be used under the guidance of a doctor.