Postnasal drip syndrome ct examination can check out the nasal cavity, sinus tissue structure whether there are abnormalities, but can not rely on ct examination alone to confirm the diagnosis, but also need to be combined with the patient’s clinical manifestations as well as other findings of the comprehensive analysis. Postnasal drip syndrome ct can show thickening of the nasal mucosa, nasal cavity fuzzy, mucus in the sinuses and other manifestations of chronic rhinitis, but generally can not be diagnosed through the results of ct display. You also need to combine the clinical manifestations of postnasal drip syndrome, episodic or persistent cough, postnasal drip, and patients with chronic pharyngitis or rhinitis history; and physical examination can be found in the posterior pharyngeal wall can be seen secretions attached, the posterior pharyngeal wall hyperplasia or cobblestone-like changes, etc. to make a definitive diagnosis. Postnasal drip syndrome ct can check the abnormal manifestations, but can not confirm the diagnosis, should consult a doctor in time, standardized diagnosis and treatment.