Ampicillin sodium works against infections caused by sensitive gram-positive cocci and some gram-negative bacteria (e.g., Haemophilus influenzae, Escherichia coli), and treats diseases such as respiratory infections, gastrointestinal infections, and urinary tract infections. Ampicillin sodium belongs to the semi-synthetic broad-spectrum penicillin, for gram-positive cocci, Escherichia coli, Salmonella, dysentery bacillus, Haemophilus influenzae and so on have certain effect. It is mostly used in the treatment of upper respiratory tract infection, pneumonia, acute gastroenteritis, acute enteritis, urinary tract infection, otitis media, meningitis, endocarditis and other diseases. For penicillin allergy is prohibited, common adverse reactions are allergic reactions, rash, nausea, vomiting and so on. For the application of ampicillin sodium, it is necessary to use it only when the doctor combines the patient’s condition to assess whether there are indications for the use of the drug, do not use the drug privately.