For cleaning nostril, clinically it is mainly seen in the treatment of nasal secretions blocking nasal cavity in patients with rhinitis and sinusitis, as well as the treatment of nasal cavity after sinusitis surgery, there are mainly two ways to clean nostril: first, the doctor does nasal cleaning with rhinological suction under the guidance of nasal endoscope, this cleaning is cleaner, including cleaning nasal secretions, commonly nasal stool, nasal scabs, etc. It can clean It can clean up the secretions in the lower nasal tract, middle nasal tract and olfactory fissure, etc. The vision of cleaning is clearer and avoid blind operation, provided that the patient can cooperate, some patients may have fear or pain during the cleaning process. Second, you can use medical saline to do nasal rinsing treatment, this treatment has no obvious side effects and is also non-invasive, patients can use the rinse to do nasal rinsing, usually twice a day, through the rinse can rinse the nasal cavity, nasal crust and other secretions clean, but also to keep the nasal cavity moist.