The main symptom of sinusitis is lack of ventilation, so the treatment of sinusitis should be done with a contracting agent of the department membrane, such as 1% ephedrine or nasal drip or Daphnelean nasal drip. The number of dots per day is required to maintain ventilation. If ventilation cannot be maintained after medication, surgical treatment such as turbinate removal or electrocautery is required. Sinusitis is a purulent inflammation in the sinuses and is characterized by a runny nose and headache. Treatment involves antibiotics to eliminate bacterial infection in the sinuses in addition to nasal taxoconstrictor drops, or maxillary sinus puncture, and if necessary, radical sinus surgery. In radical sinus surgery, functional endoscopic sinus surgery, with the help of good endoscopic illumination, thus allows complete removal of the lesion and preserves as much as possible the normal mucosa and structures of the nasal cavity and paranasal sinuses. Forming good ventilation and drainage, the minimally invasive endoscopic technique without incision is now widely used in clinical practice.