Snoring at night may be caused by physiological factors, excessive obesity, deviated nasal septum and other factors. 1. Physiological factors: such as drinking a lot of alcohol or muscle relaxation after ageing, followed by the collapse of the pharyngeal cavity tissue scaffolding, which may lead to snoring at night. 2. Excessive obesity: excessive obesity may lead to the presence of more fat in the neck, triggering the narrowing of the pharyngeal cavity, which makes it easy to breathe poorly during sleep, and then snoring may occur. 3. Nasal septum deviation: Nasal cavity structure abnormality causes obstruction of nasal cavity ventilation, which leads to open-mouth breathing at night, which will lead to snoring during sleep, and may be accompanied by dry mouth in the morning, daytime drowsiness and other manifestations. If you snore at night, it is recommended that you consult a doctor as soon as possible to clarify the cause and follow the doctor’s instructions for treatment.