More than two months baby spitting, may be the cause of immaturity, or pediatric oral ulcers, pediatric pneumonia and other diseases. 1. Developmental immaturity: due to the two-month-old baby’s salivary glands are not yet mature, oral swallowing function coordination ability is weak, so it is easy to spit, this is a normal phenomenon, parents do not need to worry too much. 2. Pediatric oral ulcers: the occurrence of this disease is related to heredity, nutrient deficiency, decreased immunity, digestive diseases and other reasons, as the child’s mouth will appear scattered round ulcers, there is obvious burning pain, so some children will be spitting because of oral discomfort and performance. 3. Pediatric Pneumonia: The disease is mainly caused by pathogenic microorganisms such as Mycoplasma pneumoniae, Chlamydia, bacteria or viral infections, and it is easy to occur when the child’s immunity is reduced. Typical symptoms include coughing, wheezing, refusing to eat, choking, etc., and also spitting. If your two-month-old baby is spitting up, there may be other reasons, so we suggest that you go to the hospital in time, complete the examination to determine the cause of the disease, and then give targeted treatment under the guidance of the doctor.