In the case of inflammation of the left pterygoid sinus, the treatment depends on the specific case. If the onset of the disease is relatively short and the patient is a child, this condition does not require special treatment, most of the oral medications for sinusitis or additional anti-inflammatory drugs can be improved. If the inflammation of the butterfly sinus is recurrent for a long time and causes symptoms such as headache, dizziness, more pus and nasal discharge, which is more common in adults, medication is not effective and endoscopic surgery is needed. The endoscopic surgery is to find the location of the opening of this pterygoid sinus, clean up the purulent secretions inside, open the sinus opening completely, and solve the symptoms of pterygoid sinus inflammation at the root in order to cure it at the root.