Azithromycin belongs to macrolide antibiotics, mainly used for acute pharyngitis, tonsillitis and otitis media, bronchitis, pneumonia, pneumonia caused by Streptococcus, Haemophilus and some patients with urological or gynecological inflammation, some patients allergic to cephalosporins caused by soft tissue infections can also be used this drug. The dosage for adults is 0.5-1.0G once a day in a single dose. The dosage for children is usually 10mg/kg once a day. Side effects of the drug include abdominal pain, diarrhea and gastrointestinal reactions such as nausea and vomiting, as well as rash, headache, dizziness, anaphylaxis and edema.