Nasal discharge is not necessarily allergic rhinitis, mainly the following analysis: 1, allergic rhinitis, mainly manifested as sneezing, runny nose, this kind of runny nose most of the clear water nasal discharge is mainly. If the patient has more snot, it can come out from the front nostrils or flow backward into the throat, but the backward flow of snot is mainly seen in the acute attack of allergic rhinitis. If the nasal mucus is not much, most patients’ nasal mucus flows out from the front nostrils, so patients with allergic rhinitis may have the situation of nasal mucus reflux. 2, nasal mucus reflux does not necessarily mean allergic rhinitis, for sinusitis, especially for patients with posterior sinusitis, such as posterior group of sieve sinuses, pteroid sinus inflammation, and other pathologies, often appear nasal mucus reflux into the pharynx, which can induce patients to appear in the upper airway, cough syndrome and other related diseases. Cough syndrome and other related diseases. Currently, the backflow of nasal mucus is a manifestation of rhinitis and sinusitis, but it is not a manifestation specific to allergic rhinitis.