Phlegm at the junction of the palate and the nose is commonly seen in posterior nostril polyps, nasopharyngitis, etc. It needs to be treated according to the specific disease, and general treatment, medication, and surgical treatment are chosen after a clear diagnosis. 1. Posterior Nostril Polyp: Inflammatory hyperplasia such as maxillary sinus polyp and inferior turbinate polyp can grow towards the nasopharynx, and then contact or pressure on the soft palate can cause excessive secretion of mucus, accompanied by a foreign body sensation, which can lead to phlegm at the junction of the palate and the nose. Surgery can be used to remove the polyps to improve the symptoms. 2. Nasopharyngitis: Inflammation of the mucous membrane of the nasopharynx can cause phlegm at the junction of the palate and the nose, and can be treated with antibiotics, such as cefdinir, amoxicillin, etc., along with saline rinsing of the nasal cavity. There are many other causes of phlegm at the junction of the palate and the nose, and it is recommended to go to the hospital in time to improve the examination after the symptoms, and take standardized treatment according to the doctor’s instructions, not to ignore the symptoms, and take it lightly.