Side sleep drooling may be due to sleeping posture, oral inflammation, facial neuritis and other reasons, different reasons, the corresponding treatment is different, it is recommended that patients go to the hospital to find out the cause of the disease, the corresponding treatment. 1. Sleeping posture: Sleeping posture is not correct, may also cause the phenomenon of drooling, such as sleeping on the stomach, sleeping sideways, etc., will lead to the mouth slightly open, so there is drooling, is a normal situation, in this case, just need to adjust the sleeping posture, you can avoid the occurrence of drooling. 2. Oral inflammation: If there is oral inflammation, such as gingivitis, periodontitis, ulcers and other conditions, will stimulate the secretion of saliva, thus causing the symptoms of drooling. You can take some anti-inflammatory drugs for treatment, such as cephalosporin anti-inflammatory drugs, metronidazole, etc., after the disease is relieved, the phenomenon of drooling will disappear. 3. Facial neuritis: Facial neuritis may also appear in the case of sleep drooling, in addition, the patient may also be accompanied by, the eyes do not close tightly, crooked mouth and other symptoms. It can be treated with some nerve-nourishing drugs, such as methylcobalamin, and antiviral drugs such as acyclovir. It is recommended not to eat before going to bed, and at the same time, and brush teeth or rinse mouth, adjust their sleeping position, go to the hospital as soon as possible for examination and treatment, the use of drugs need to follow the doctor’s advice.