Yellow throat clinically may have the following reasons: first, the most common clinical reason is that the patient has chronic pharyngitis, the posterior pharyngeal wall at the root of the tongue has a large amount of lymphatic tissue, these lymphatic tissues produce yellowish secretions, secretions attached to the surface of the posterior pharyngeal wall, so that it may appear as a yellowish performance; second, some patients have long-term retracted nasal discharge, especially seen in chronic sinusitis, posterior group Patients with sinusitis, long-term large amounts of purulent secretions, attached to the posterior pharyngeal wall can be manifested as yellowish or purulent secretions in the throat; third, some patients have long-term pneumonia, intrapulmonary infection, long-term cough, coughing yellow sputum, this yellow sputum in the throat when it can also be manifested as yellowing. Clinically, for patients with yellow throat, it is necessary to ask the patient’s medical history and improve relevant examinations, such as electronic nasolaryngoscopy, lung CT, etc. to make a comprehensive judgment.