The patient was a male patient, accompanied by his wife, who said he is usually quite stubborn, nasal congestion for a long time have not been properly seen, because the nasal congestion is very strong, the night is snoring loudly, recently the nasal congestion has worsened, only reluctantly into the hospital to come. After asking about the condition, the patient was examined and the endoscope saw that both turbinates were not very large and the nasal passages were still open, and then into the mirror, oh, the problem came out, there was a large mass of new tissue blocking the posterior nostril. No wonder there is no airflow. Deng Hua of the First Affiliated Hospital of Guiyang College of Traditional Chinese Medicine was admitted to the hospital and underwent a smooth surgery, finally taking out the meatus blocking the posterior nostril. The nasal congestion that had been bothering the patient for many years was cured, and he did not snore at night anymore. Posterior nostril polyps can originate either in the maxillary sinus or in the pterygoid sinus and hang down to the nasopharynx of the posterior nostril through the natural sinus opening. They are more common in adolescents and children, and are more common in males than females. Unilateral progressive nasal congestion is the main symptom. Patients first feel that there is something moving in the nose with breathing, and gradually feel that inhalation is still possible but exhalation is not smooth. If the polyp continues to grow into the nasopharyngeal cavity, bilateral nasal congestion may occur. If the polyp is huge, it may fall into the oropharynx and cause foreign body sensation, and sometimes it may affect the movement of soft palate and cause changes in pronunciation. Examination often shows a smooth grayish stem extending backward to the posterior nostril or nasopharynx. Polyps that fall into the pharynx are easier to see when the soft palate is lifted. The treatment of posterior nostril polyps is mainly surgical. The removal of posterior nostril polyps under nasal endoscopy is less invasive, faster recovery, and can remove the diseased tissue cleanly while preserving the normal mucosal tissue.