Drooling in women’s sleep may be due to physiological causes or pathological causes. Physiological causes are mostly caused by incorrect sleeping posture; pathological causes include thrush, facial nerve palsy and other diseases. 1. Physiological reasons: due to the incorrect posture of the patient when sleeping, such as sleeping on the stomach or sleeping on the side, it is easy to cause the production of drooling. This phenomenon is a normal physiological phenomenon, and does not require special treatment. 2. Pathological causes. Thrush: Thrush is an oral disease caused by Candida albicans infection, which can cause extensive damage to the oral mucosa and can involve the salivary glands, leading to the phenomenon of drooling when women sleep. Facial nerve palsy: Facial nerve palsy can lead to drooling during sleep. When the patient sleep drooling may also be related to oral inflammation, acute tonsillitis and other diseases, should go to the hospital in time to find out the cause, clear causes and active treatment.