The onset of acute pharyngolaryngitis is considered to be caused by pathogenic infection or the spread of nasal and pharyngeal diseases. 1. Pathogen infection: the invasion of the throat caused by bacterial infection or viral infection is the most common cause of acute pharyngolaryngitis; a variety of pathogens can reach the throat through the respiratory tract, causing inflammatory lesions, which contribute to the formation and onset of acute pharyngolaryngitis. 2. Other nasopharyngeal diseases: acute pharyngitis may also be other nasal and pharyngeal diseases, such as acute sinusitis, acute rhinitis, acute tonsillitis, etc., leading to pathogens in the lesion area to spread to the throat, which in turn causes acute pharyngitis. Acute pharyngolaryngitis is actually caused by pathogens invading the throat, in addition to cold and cold, excessive physical fatigue, staying up all night, smoking, alcoholism, etc., may induce acute pharyngolaryngitis; individuals who experience unusual throat discomfort are advised to seek medical help in a timely manner.