Pharyngitis mostly belongs to the Chinese medicine “plum nucleus gas (similar to pharyngeal allergy)” category, after taking traditional Chinese medicine phlegm may be because of the medication of the Chinese medicine is not symptomatic, during the period of medication dietary disorders and other reasons. 1. Chinese medicine is not appropriate: if the Chinese medicine used by patients with prune nucleus qi is too nourishing and greasy, it is easy to produce phlegm and dampness and phlegm, if the medicine used is too cold, it is easy to damage the spleen and stomach, and if the spleen qi is deficient, then the water and wetness can not be transported, which may lead to phlegm and dampness internal stagnation and the emergence of phlegm and phlegm. 2. Dietary disorders during the medication: Patients with prune nucleus qi need to eat a light diet during the taking of traditional Chinese medicines, avoiding spicy and stimulating and greasy food as much as possible, if they do not pay attention to their diets during the medication period, it is possible that they will have phlegm after taking the medication. Patients with plum nucleus qi need to consult a regular hospital, under the guidance of a professional doctor to take medication, and pay attention to dietary modification during the medication.