Boogers are a normal physiological phenomenon. Boogers are mainly made up of secretions from the mucous membrane of the nasal cavity, as well as dust and microorganisms inhaled by the nasal cavity. Boogers are a normal product of the normal metabolic process of the nasal cavity, and everyone produces boogers. In certain pathological conditions, the amount of nasal stool may increase or decrease, mainly in the following cases: 1. For patients with acute and chronic rhinitis and sinusitis, the amount of nasal stool may increase due to inflammatory stimulation of the nasal mucosa, resulting in increased mucosal exudation; 2. For patients with dry rhinitis and atrophic rhinitis, the nasal stool may be mainly produced by external microorganisms, dust mites and dust directly. Due to insufficient secretion, the nasal stools may be particularly dry, mostly dry, and often have a foul odor. Too much or too little nasal stool is pathological and needs to be treated clinically according to the situation.