During outpatient consultations, patients often say that they have phlegm in their throat that they cannot cough up or they can cough it up but it comes back soon afterwards. There is no abnormality in the laryngoscopy, and treatment for chronic pharyngitis is not effective. Further history was taken and the patient was asked whether he had a cough. Does the secretion originate from the throat or from the nasal cavity…does it need to be inhaled before being exhaled? The patient responded that the source was from the nasal cavity because the patient’s description was unclear, which led to misdiagnosis and delayed treatment. To be precise, it should be nasal discharge backward into the mouth. It should be a symptom of nasopharyngitis or chronic sinusitis. There are few patients in this category. The main treatment is to treat nasopharyngitis or chronic sinusitis. You can take oral solution of nasal abyssal and nasal spray of endosolina. The symptoms are mild adhere to the saline rinse nasal cavity effect is very good.