When patients have the condition of loud snoring, it is often because the upper respiratory tract is heavily blocked, resulting in greater resistance to breathing during sleep, which will easily cause the situation of loud snoring. Patients may be obese, which may lead to the narrowing of the entire upper airway, further leading to a significant effort to breathe, resulting in more serious snoring and continuous open-mouth breathing during sleep at night. Some patients may also have severe infectious and allergic diseases caused by inflammation of the nasal cavity and sinuses, resulting in serious congestion, swelling and edema of the turbinate mucosa. There may also be obvious deviations of the nasal septum, or adenoids and tonsils may be enlarged, all of which may cause loud snoring.