Amoxicillin can be used to treat pneumonia. Amoxicillin is an antibacterial drug belonging to the penicillin class. Streptococcus pneumoniae is a Gram-positive bacterium that is very sensitive to penicillin antibacterial drugs, so amoxicillin can be used to treat pneumonia. Pneumonia is relatively common in clinical practice, and the symptoms are mainly high fever, cough and sputum, and some patients may have chest pain. If you are allergic to amoxicillin, you can also take other antibacterial drugs, such as cephalosporins and respiratory quinolones.