Whether it is normal for an 11-month-old baby to have three bowel movements a day should be judged in the light of his/her previous bowel habits and the nature of his/her bowel movements, which may be normal or abnormal. The number and character of stools often reflect the physiological state of the gastrointestinal tract, and the evaluation of stools is an important part of checking the health status of infants and young children. For infants and young children, there are individual differences in the number of bowel movements, e.g., some babies have regular bowel movement once every 2 days, while some babies may have bowel movement 2~3 times a day. For the 11-month-old baby to have 3 bowel movements per day, it is necessary to take into account the previous bowel habits, stool characteristics and the presence of other abnormalities and other factors. For babies who used to have one bowel movement per day or regular bowel movement every other day, an increase in the number of bowel movements with a change in bowel character is usually considered abnormal, and some babies may have vomiting and fever, and active medical consultation is recommended. For babies who used to have bowel movements 1~2 times a day, if they have the above symptoms, no obvious change in the nature of stools, and no other abnormal symptoms, such as fever, vomiting or abdominal discomfort, it is not considered abnormal for the time being, and may be related to dietary and environmental factors, and can be closely observed. Close observation is sufficient. Consultation with a specialist is recommended if necessary.