Patients with nasal discharge, often and nasal cavity, sinus region of the inflammatory infectious factors, as well as allergic factors related to the following: 1, patients with watery nasal discharge, may be the existence of acute rhinitis or allergic rhinitis, the patient may be cold, or suffered from respiratory viral infections, caused by the onset of acute rhinitis, nasal mucosal glands are prone to secrete more watery secretions. Allergic rhinitis patients, mainly due to the nasal mucosa contact with dust, pollen and other allergens, caused by nasal allergy symptoms, nasal mucosa will show edema, nasal mucosal glands will also secrete more watery secretions. 2, if the patient appears to be purulent nasal mucus, commonly found in sinusitis, the mucosal glands in the sinus cavity will produce more yellow, or yellow-green pus secretion, through the sinus openings of the nasal tract, the mucous glands will produce more yellow, or green pus. Through the sinus opening of each nasal passage and discharge the nasal passage, producing purulent nasal discharge.