As the saying goes “ten babies ten streams”, drooling is a normal part of the growth process of infants, but some diseases can also cause increased drooling in babies, that specific baby drooling is what is going on? 1, normal physiological phenomenon baby 3-4 months, the central nervous system and salivary glands gradually mature, saliva secretion began to increase, up to 200 ml per day. 5-6 months later, due to the addition of complementary foods, the eruption of the milk teeth on the gingival nerve mechanical stimulation caused by a significant increase in the amount of saliva, and the volume of the baby’s mouth is relatively small, swallowing function is not yet mature, the mouth is shallow, lip closure and swallowing Action is not yet coordinated, saliva can not be swallowed in time, it is easy to occur drooling. This is a normal physiological phenomenon and does not require treatment. With the coming out of the milk teeth, the mouth is easy to become larger, swallowing function improvement, generally to 2-3 years old after the phenomenon of drooling will disappear naturally. 2, oral diseases caused by a small number of babies drooling is not normal, most commonly caused by various causes of stomatitis, such as ulcerative stomatitis, thrush, acute tonsillitis, acute pharyngitis, herpes pharyngitis, etc.. Due to oral inflammatory stimulation, reflexively cause increased saliva secretion, and pain when swallowing, and reluctance to swallow, often manifested as more saliva than usual, and accompanied by crying, do not eat milk or even fever, etc.. Symptomatic treatment should be given in time, and when the oral inflammation is cured, it will return to normal. 3, due to swallowing dysfunction The baby usually seems weak and weak all over, poor sucking power when drinking water or eating milk, easy to choke and cough; saliva seems to flow continuously and uninterruptedly; motor development is slower than other babies. At this time, you should suspect that the baby is not congenital brain underdevelopment, lack of intelligence, or post-onset brain injury, such as cerebral palsy, encephalitis or neonatal asphyxia, etc., caused by the dysfunction of swallowing saliva; you should promptly take the child to the hospital for examination to confirm the diagnosis. 4, other factors In addition, the child has a cold, cold, nasal congestion, poor breathing, commonly used mouth breathing, saliva will flow from the corners of the mouth. Some people like to pinch the baby’s face, this intimate action will increase the stimulation of the salivary glands; because the skin of the baby’s face is thin and tender, the parotid tissue in the mouth is not well developed, fragile and vulnerable. If you often knead, or too much strength may lead to slight damage to the gland, the secretion of saliva will greatly exceed normal pediatric, it is recommended not to regularly or forcefully knead.