Six-month-old baby poop 4 times a day can be seen in physiological phenomena, pathological conditions (such as infectious diarrhea), such babies can vaccination need to be combined with the baby’s situation to decide, such as the consideration of diarrheal diseases need to be temporarily relieved of vaccination, such as physiological phenomena can be vaccinated. 1. Physiological phenomenon: for 6-month-old babies, especially breastfed babies, daily bowel movements can be more often, such as about 2 to 4 times. Therefore, for 6-month-old babies who have 4 bowel movements a day, the stool routine can be perfected, combined with the character of the stool, if the character is normal, then it is mostly considered as a normal physiological phenomenon, and then the vaccine can be vaccinated. 2. Pathological conditions: such as infectious diarrhea disease, the baby 4 times a day to solve the stool, the number of bowel movements than the daily significantly increased, or show dilute water stools, part of the blood can be, improve the routine stool examination can assist in the diagnosis, diagnosis is clear and need to comply with the doctor’s instructions to actively treat this situation can not be vaccinated. This situation is not vaccination, need to suspend vaccination, the deadline for replenishment. Can six-month-old babies poop four times a day to get vaccinated, should be combined with the baby’s condition by the vaccination station specialist physician to make a comprehensive judgment to decide whether to vaccinate.