Amoxicillin is a beta-lactam antibiotic and belongs to the penicillin group of drugs. Amoxicillin is a relatively common clinical antibiotic, belonging to the penicillin class of drugs, mostly used in the treatment of tonsillitis, otitis media, sinusitis, bronchitis, skin and soft tissue infections, urinary tract infections caused by bacteria such as Streptococcus lysococcus, Staphylococcus staphylococcus, Streptococcus pneumoniae, Escherichia coli or Haemophilus influenzae, etc., and also combined with Clarithromycin, Omeprazole, and Bismuth Potassium Citrate to treat Helicobacter pylori. Helicobacter. Clinical use of amoxicillin may cause nausea, vomiting, abdominal pain, diarrhea, skin rash, fever, anxiety and other adverse reactions, the emergence of adverse reactions need to stop the drug in a timely manner for treatment, and for penicillin allergic patients prohibited amoxicillin. Patients need to take the drug under the doctor’s supervision, not on their own, so as not to cause adverse reactions.