There are the following clinical reasons for pharyngitis coughing at night: the first reason is that patients with pharyngitis may be allergic to microorganisms present on the bed sheets and in the house air, most commonly dust mite allergy, when the patient sleeps at night, a large number of allergens, dust mites are inhaled by the body, which can easily induce allergic pharyngitis in patients, resulting in coughing at night, and of course sometimes easily accompanied by asthma, more The second reason is that the patient sleeps at night. The second reason is that patients are prone to gastroesophageal reflux at night when they are sleeping, especially when they are lying down, and these stomach contents, stomach acid and other digestive enzymes enter the throat through the esophagus retrogradely, stimulating the mucous membrane of the throat and causing patients to develop cough and phlegm. In conclusion, if a patient develops a cough at night, it is recommended that the patient visit the relevant departments such as ENT, respiratory medicine, gastroenterology, etc. to see what the patient’s possible triggers are.