It is best not to wear a mask when sleeping, which will affect breathing. If you often drool when you sleep, you'd better pay more attention to your health and adjust it in time. First of all, it may be improper sleeping position. Like sleeping on your desk and sleeping on your side, it is easy to cause drooling. Secondly, inflammation in the mouth can also promote saliva secretion. If the mouth is infected by bacteria, the pain is obvious and it is easy to drool. Local medication is needed to promote ulcer healing, and drooling will disappear automatically. Tooth deformity is the third cause of drooling during sleep. You can go to a regular hospital to consult a doctor, and analyze the specific problems! Hope to help you, hope to adopt!