Boogers will not enter the nasal cavity, and even if they do, they will dissolve in the nasal cavity and will not enter the trachea and cause harm to the human body. Excessive nasal stools are mostly seen in rhinitis, which is mainly due to congestion and swelling of the nasal mucosa after infection, resulting in a large amount of secretion exudation, manifested as nasal congestion, more nasal mucus, and dry nasal mucus, resulting in the accumulation of nasal stools in the anterior nostril area. Saline can be used appropriately for nasal stool cleaning, as well as anti-inflammatory and anti-swelling of the nasal mucosa to improve inflammation. Rhinitis appears, usually pay attention to avoid cold and cold, at the same time to exercise more, to enhance the body resistance, so as to effectively prevent and control the onset of rhinitis.