Frontal sinusitis is most commonly caused by poor drainage of secretions from the frontal sinus outlet for various reasons, and after bacterial infection, it can lead to chronic frontal sinusitis, accompanied by symptoms such as nasal congestion, yellow pus nasal discharge, headache, dizziness and local pressure pain. The most important thing to relieve the symptoms is to take the oral drug cefradin capsules or cefuroxime sodium tablets, together with the nose spraying drug coleus or endosulfan, and you can apply the pro-drainage drug chenode or mucosolvan. If the pain is severe, a small amount of the hormonal drug prednisone tablets or dexamethasone tablets can be added. If the pain becomes unbearable, endoscopic debridement under general anesthesia may be considered.