The causes of drooling include normal physiological phenomenon, reflux esophagitis and facial paralysis, etc. Patients need to choose appropriate treatment according to different causes. 1. Normal physiological phenomenon: children are in the period of tooth eruption, saliva secretion is more, the bottom of the mouth is shallow, and the phenomenon of drooling is easy to appear. Some adults have strong salivary secretion and sometimes have drooling phenomenon, which usually does not need to be treated. 2. Reflux esophagitis: it can cause stomach acid and stomach contents to flow back into the mouth and pharynx effortlessly, stimulating the pharynx and mouth, and the symptom of increased drooling occurs. Patients should be careful not to take bed rest immediately after eating, and at the same time, they should quit smoking and limit alcohol, and can take medicines such as omeprazole, pantoprazole, lansoprazole and so on as prescribed by the doctor to alleviate the symptoms. 3. Facial paralysis: If facial muscle paralysis occurs, it will make the muscles can not be normal contraction, incomplete closure of the mouth, causing saliva outflow, talking drooling. Patients should go to the hospital in time, to clarify the cause of the disease, and actively treat the original disease. Drooling may also be related to developmental abnormalities, brain disorders, etc. If the symptoms persist and cannot be relieved, it is necessary to go to the hospital in a timely manner to clarify the cause of the disease and carry out diagnosis and treatment, so as not to delay the condition.