Depending on the location of the bacterial infection in young children, the duration of antibiotic use varies from a few days to a few weeks, and the medication should be administered as prescribed by the doctor. Usually young children have low immunity and are susceptible to bacterial and viral infections, which can affect their health and development. In case of acute cystitis caused by bacterial infection, antibiotics should be used for about 3 days, while pyelonephritis should be treated for about 2 weeks and intracranial infection for at least 4 weeks. In the case of specific pathogen infections, such as Klebsiella pneumoniae and Pseudomonas aeruginosa, the duration of medication is longer, depending on the situation. Parents are advised to follow the doctor’s instructions after a clear diagnosis, and if necessary, improve the pathogenicity of the examination, according to the results of the drug sensitivity to adjust the use of antibiotics in a timely manner. Antibiotics should be used under the guidance of a doctor, do not take medication without authorization to avoid danger, if the child after the use of drugs appear uncomfortable symptoms, should immediately seek medical attention.