Fever caused by bacterial infections in babies usually lasts about 5-7 days and can be effectively shortened by reasonable antibiotic treatment. Fever is one of the more common symptoms in childhood and is usually caused by viral or bacterial infections. Fever caused by bacterial infections can be treated with antibiotics, and generally the temperature will gradually improve in about 3 days of medication, and most babies can be cured in about 1 week of treatment. However, it also depends on the actual condition of the baby, if the condition is serious or there is a tendency to aggravate, such as the development of pneumonia, the course of the disease will be relatively longer, may be extended to about half a month. When a baby has a fever, parents can take physical cooling methods, such as warm water baths or fever patches to help cool the baby down, and eat a light diet. It is also necessary to observe the baby’s temperature change and other symptoms, if the condition is more serious, promptly go to the pediatrician to determine the cause of the disease, so as not to aggravate the condition.