Drooling in bed at night. First of all, it can be seen in cerebrovascular disease, usually the patient will have facial palsy, facial palsy after the affected side of the facial muscle movement failure, the phenomenon of drooling can occur at night when lying. Secondly, drooling at night can also be seen in inflammatory irritation of the mouth, such as gingivitis, periodontitis, etc., if necessary, see a specialist for treatment. Once again, drooling at night, Chinese medicine generally believes that the spleen is the master of transportation and digestion, and after the spleen and stomach are weak, there will be a malfunction of this transportation and digestion, resulting in the accumulation of phlegm and dampness in the body, and the patient may have a fat tongue with teeth marks, and generally the phenomenon of drooling can occur. Finally, drooling at night is also seen in people who usually eat fatty, sweet and thick flavors, and because of this phlegm and dampness, patients with a heavy body have a fat tongue, and can also appear to sleep at night with drooling. It is recommended to have a light diet and also take oral medication for spleen and dampness.