Mucous phlegm in the epiglottis of the nasal cavity should refer to the nasopharynx, which needs to be treated according to its causes, such as posterior nostril polyp, nasopharyngitis, pharyngolaryngitis, and so on, and general treatment, medication, and surgical treatment should be chosen after a clear diagnosis. 1. Posterior Nostril Polyp: Mucous phlegm in the palate of the nose may be due to posterior nostril polyp, which can lead to increased secretion due to the inflammatory lifelong development of the polyp towards the nasopharynx. Treatment suggests that patients can go to the hospital to remove the polyp through surgery to improve the symptoms. 2. Nasopharyngitis: bacterial infection of the mucous membrane of the nasopharynx can lead to mucous phlegm in the palate of the nasal cavity, treatment can use antibiotic drugs, such as amoxicillin, azithromycin, at the same time, can be combined with physiological sea saline rinsing of the nasal cavity. 3. Pharyngitis: Pharyngitis is an inflammation of the soft palate, which can also lead to mucous phlegm in the nasal palate. Treatment can choose furacilin gargle, compound borax gargle, at the same time pay attention to diet, diet needs to be light, avoid stimulating food. There are many causes of mucous phlegm in the upper jaw of the nasal cavity, and it is recommended to go to the hospital in time to complete the examination after the symptoms appear, and standardize the use of medication and treatment under the guidance of the doctor, so as not to ignore the symptoms and take them lightly.