Severe drooling in one and a half year old babies is usually normal. If accompanied by developmental abnormalities, intellectual abnormalities and other symptoms, then it is not normal. It is recommended to consult a doctor to determine the cause of the problem and then treat it. Usually the salivary glands are not particularly developed during the newborn period, the symptoms of drooling are not very obvious, will increase with age. Babies in one and a half years of age when the salivary glands are gradually developed, thus appearing saliva secretion obvious symptoms, most of the babies salivary glands secretion amount is much higher than that of adults. Coupled with this time just into the eruption of milk teeth period, after eating will be drooling seriously, at this time the need to clean up the baby’s saliva, to avoid the presence of long-term saliva, resulting in eczema and other skin lesions. If the baby drooling symptoms are more serious, accompanied by developmental abnormalities, intellectual development and other abnormal symptoms, it is recommended to consult a pediatrician in a timely manner, under the guidance of the doctor to improve the examination to clarify the cause of treatment.