Drooling in bed is a common manifestation that can occur in both children and adults, and is prone to occur when sleeping in an improper position, in a prone position. Drooling in bed in children is usually related to physiological factors such as incomplete physical development and incomplete eruption of teeth. In adults, drooling in bed may be related to excessive excitement, mental stress, excessive fatigue and other physiological factors, especially in the elderly due to muscle relaxation around the mouth, swallowing ability is weakened, drooling in bed is also more common, if there is no other abnormalities, generally do not need to deal with. In addition, the symptoms of sleep drooling may also be related to the following pathological factors: a. Oral lesions: 1. Periodontal disease: some patients do not pay attention to oral cleaning, morning and evening without timely and thorough oral cleaning, poor oral hygiene environment, which may lead to bacterial growth, inducing oral diseases, such as pericoronitis, gingivitis, etc., which may lead to pain and ulceration in the affected area, prompting increased saliva secretion and leading to drooling in bed. Patients with dental calculus can choose supragingival scaling or subgingival scaling; 2, dental lesions: such as dental caries, dental malformation, etc., may also cause patients to involuntarily open their mouths in sleep due to poor bite or pain, and the symptoms of drooling. Usually you can go to a dental clinic for dental filling as well as orthodontic treatment. Second, other factors: 1, nervous system abnormalities: may be the patient sleep cold, wind, cold, etc., resulting in the body’s nervous system invasion, facial neuritis, resulting in crooked corners of the mouth, unable to close the mouth, causing sleep drooling. Such patients should promptly go to the psychiatric department of the hospital for treatment and relief and treatment through acupuncture, massage and hot compresses in Chinese medicine. If the facial neuritis is caused by stroke, emergency thrombolysis or hypotensive hemostatic treatment is needed. 2. Drug effects: If the patient takes anti-epileptic drugs, drooling in sleep may be an adverse reaction to the drugs, and should communicate with the doctor to choose a more suitable drug for treatment.