There are many causes of abscesses in the throat, such as peritonsillar abscess, retropharyngeal abscess, acute simple pharyngitis and so on. 1. peritonsillar abscess: peritonsillar abscess and tonsillitis have a certain relationship, the abscess can occur in the tonsillar peritonsillar space, there will be a significant local bulge, can show the phenomenon of pus in the throat. 2. Retropharyngeal abscess: abscess in the throat may belong to the retropharyngeal abscess, mostly due to bacterial infection, may also be related to the formation of cervical spine tuberculosis abscess. 3. Acute simple pharyngitis: the pharyngeal mucosa is congested with blood, vasodilatation and plasma exudation, which makes the mucosal epithelium and submucosa edematous and swollen, and there may be leukocyte infiltration. Mucous gland hypersecretion, mucosal surface epithelial detachment and leukocyte exudate surface. Submucosal lymphatic tissue involvement, so that the lymphatic follicles are enlarged, and in severe cases can be protruding from the surface of the pharyngeal wall, and even yellowish-white punctate exudate shaped like pus. There are many reasons for the pus in the throat, after the symptoms, it is recommended that the patient go to the hospital as soon as possible to improve the examination, clear diagnosis and follow the doctor’s instructions to give standardized treatment, do not ignore the symptoms, delay the condition.