Milk overflow is also called milk spillage. Newborns’ milk overflow may be due to physiological phenomenon or pathological reasons such as indigestion, pyloric stenosis, etc., which can be treated by oral medication, surgery, and so on. 1. Physiological phenomenon: Due to the imperfect development of the stomach wall muscle layer of newborns, usually the stomach is horizontal, and the stomach capacity is small, low muscle tone, after feeding more milk, newborns can appear the phenomenon of milk overflow, which is a normal manifestation of the newborns with the growth and development of the newborns, this symptom can be gradually alleviated, parents can be in the breastfeeding, give the baby appropriate burp, which can alleviate the occurrence of milk overflow. 2. indigestion: if the newborn in the abdomen after a cold or too much milk may lead to indigestion, resulting in milk overflow, accompanied by abdominal pain, diarrhea and other symptoms, parents can use probiotics such as lactobacillus granules and other drugs under the guidance of the doctor to regulate the gastrointestinal flora. 3. Pyloric obstruction: due to the gastroduodenal junction of the pyloric hypertrophy caused by the discharge of food is too slow, can be manifested as newborn vomiting, regurgitation, milk overflow and other symptoms, this situation generally need to take surgical treatment. If the phenomenon of newborn milk spillage, and the existence of accompanying symptoms, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor, improve the relevant examination, clear the cause of the disease, symptomatic treatment, do not unauthorized use of medication, so as not to cause adverse effects.