There are many reasons for sudden snoring, which are divided into physiologic and pathologic reasons, and the pathologic reasons include otorhinolaryngologic diseases and respiratory diseases. 1. Physiological: If you have recently slept in an incorrect position or gained a lot of weight, it will trigger snoring symptoms, which is because the airway has been compressed and thus narrowed, and the poor airflow will be manifested as snoring; and excessive pressure or fatigue will also cause snoring. All of the above are normal physiological phenomena, eliminating the triggers can be restored, without additional treatment. 2. Pathological: If the patient suffers from ear, nose and throat diseases, such as sinusitis, rhinitis, tonsillitis, laryngeal cancer and adenoid hypertrophy, etc., it will also cause snoring due to the narrowing of the respiratory tract; there are also respiratory diseases such as colds and flu, which will also lead to poor respiration, and thus snoring and other clinical manifestations. If you suspect that the symptoms of snoring are caused by pathologic reasons, it is recommended that you go to the hospital in time.