Children with bacterial infections are usually considered to be treated with antibiotics, usually commonly used antibiotics are penicillins, cephalosporins or targeted antibiotics, the specific medication needs to be selected according to the symptoms. 1. Penicillin: respiratory tract bacterial infections are mostly caused by gram-positive cocci, and in the absence of allergies, they can be treated with penicillin drugs, such as penicillin V, penicillin G and so on. 2. Cephalosporins: Intestinal bacterial infections are mostly caused by gram-negative bacilli, which need to be treated with cephalosporin antibiotics, such as ceftazidime and cefixime. 3. other antibiotics: children with more serious bacterial infections, if necessary, need to carry out bacterial culture, clear pathogens, and drug sensitivity tests, and then use targeted antibiotic treatment, such as macrolide antibiotics such as azithromycin, roxithromycin, etc., can quickly achieve better therapeutic effect. It is recommended that when a child develops symptoms of bacterial infection, parents should take the child to the hospital as soon as possible to improve the relevant examination, under the guidance of the doctor’s medication, and should not blindly use medication at will.