Intranasal pain, the name of the evidence. It refers to pain in the nasal cavity. It is stated in “Treatise on the Origin of Diseases – Nasal Pain” that “the lung is connected to the nose, the wind evil enters the nose with the gas and fights with the blood, the evil and the positive strike each other, the airway does not declare, so the nose hurts.” It can also be caused by phlegm and fire blocking the clear orifices. In addition to nasal pain (mostly vague pain), it is often accompanied by dryness of the mouth and tongue. For those with phlegm fire, Er Chen Wan with Scutellaria baicalensis, Radix et Rhizoma orchid, Gardenia jasminoides and Mai Dong is recommended; for nasal pain, dry nose, dry throat and slight cough, Nourishing Yin and Clearing Lung Soup can be added and reduced. If it is caused by alcoholic wine and thick taste, the formula should be used with Ganlu Disinfectant Dan. Intranasal pain is caused by dry rupture of the nasal mucosa and may be accompanied by rhinorrhea. Intranasal pain is also one of the symptoms of nasal cancer. Symptoms of nasal malignant tumor manifest as progressive aggravation, mostly asymptomatic in early stage, and may have nasal congestion and bloody snot in late stage. Facial numbness and swelling, eye displacement, loose teeth, vision loss, difficulty in opening mouth or other neurological symptoms. The symptoms of intranasal pain caused by malignant tumor of nasal cavity are progressively aggravated, mostly asymptomatic in the early stage, and may have nasal congestion and bloody mucus in the late stage. Facial numbness and swelling, eye displacement, loose teeth, vision loss, difficulty in opening mouth or other neurological symptoms. Doctors may find destruction of sinus bone after CT and X-ray examinations, and pathological examinations can confirm the diagnosis.