Sleeping constantly drooling, can be improved by changing the improper sleeping posture, because the human mouth will continue to secrete saliva, with the body’s reflexive swallowing action and into the stomach. If the body is sleeping on its back, side sleep, etc., will prevent the body’s normal swallowing function, saliva in the oral cavity stagnant too much resulting in the symptoms of continuous drooling in bed. The possibility of oral and other diseases, such as gingivitis, dental caries, indigestion, phytodystrophy, etc., cannot be ruled out, because oral and other diseases may cause abnormal secretion of oral saliva or symptoms of swallowing disorders. For pathological reasons caused by sleep drooling, it is recommended to go to a regular hospital to receive further detailed examination to confirm the specific cause of the disease before symptomatic treatment.