Azithromycin is a macrolide antibiotic that was discovered relatively early. Azithromycin is suitable for a wide range of people, and can be used by children and also by the elderly, so it is relatively widely used. It has a certain antibacterial effect mainly against most bacteria, and also has a good antibacterial treatment effect against mycoplasma and chlamydia. Generally acute pharyngitis and tonsillitis, which are streptococcal infections, otitis media, sinusitis, bronchitis and acute attacks of chronic bronchitis, azithromycin has a good antibacterial effect. Some mycoplasma pneumonia, Haemophilus infections, Streptococcus pneumoniae, and urethritis and cervicitis due to mycoplasma, especially Chlamydia trachomatis and Neisseria gonorrhoeae, have good antibacterial effects. Even some infections of the soft tissues of the skin are well treated. For azithromycin, it is suitable for the general population, and if there are patients who are allergic to azithromycin, try not to use it.