Drooling in children may be teething, oral disease or congenital disease. Children in the process of teething, due to the bottom of the child’s mouth is relatively shallow, swallowing function is not perfect, in the process of tooth eruption to stimulate saliva secretion increases, drooling is normal, do not worry. In addition to drooling also accompanied by children crying, eating difficulties or even fever, is the manifestation of oral inflammation, commonly thrush, tonsillitis, oral ulcers or oral herpes. Severe congenital disorders such as trisomy 21 can also cause drooling along with facial changes. Drooling is most often seen in these conditions and requires medical attention such as a visit to the stomatology department of a hospital if necessary.