Paranasal sinusitis is usually referred to as purulent sinusitis, a common disease that can be acute or chronic, with the latter being more common. Acute sinusitis occurs in one sinus, while chronic sinusitis can involve multiple sinuses, or even all sinuses on one or both sides, resulting in full sinusitis. The causes of sinusitis are many, such as acute rhinitis, acute infectious disease, bacterial pathogenic factors, allergic factors, anatomical factors of the sinuses, proximity to the spread of infection, external infection pathogenic factors, systemic pathogenic factors, etc. Sinusitis, especially chronic sinusitis, can have adverse effects on the physiological functions of all parts of the ear, nose and throat, as well as the trachea, bronchus, lungs and digestive tract, and can form foci that can damage other organs and brain power. Also patients with sinusitis are a carrier, especially during the acute onset, and are somewhat contagious. Of all sinuses, the maxillary sinus is more susceptible to infection, due to its own anatomical morphology. The natural opening of the maxillary sinus is too high and is among the worst of all sinuses in terms of drainage. With a high opening and a low cavity, air exchange can only be accomplished with a downward flow of air, which does not meet the physiological requirements of ventilation. The sinus cavity is large, the opening is small, and the disparity between the two ratios also hinders drainage. Sinusitis is closely related to the health condition of the body, so when sinusitis occurs, it must be actively treated.