The causes of snoring are usually more male than female, older than younger, and more obese than thinner. 1. nasal polyps, sinusitis, enlarged inferior turbinates and deviated nasal septum cause poor ventilation of the nasal cavity, resulting in nasal congestion at night, leading to snoring. 2. excessive fat accumulation in the soft palate of the pharyngeal cavity caused by obesity causes snoring. 3. tonsillitis causes tonsillar hypertrophy, and tonsillar hypertrophy causes narrowing of the left and right radii of the pharyngeal cavity, resulting in snoring. 4. 5. anatomical factors, such as a short jaw, can lead to narrowing of the pharyngeal cavity and cause snoring.