Frequent spitting up in four-month-old babies may be normal, but if it is accompanied by other discomforts, such as diarrhea and bloating, it may be abnormal. Four-month-old babies spit up frequently may be a normal physiological response, some babies in about four months when the digestive tract is not fully developed, the stomach is small, and is transverse state. If too much food is eaten at one time, it may lead to frequent spitting up, and if the feeding position is not correct, this symptom may also occur. Some babies spit up frequently may also be related to diseases, such as indigestion, gastrointestinal dysfunction, acute gastroenteritis and other problems may affect the baby’s digestion and absorption, the baby spit up frequently symptoms, this situation is generally not normal. If frequent spitting up is difficult to relieve or accompanied by other abnormalities, it is recommended to bring the baby to the doctor in a timely manner, a comprehensive assessment by a specialist, and if necessary, intervention.