How many days does it take for a child’s bacterial fever to go down cannot be generalized, it may take 2-3 days for a short period of time, or 7 days or even longer for a long period of time. After a child develops a bacterial fever, if the temperature is not particularly high, the infection is not serious, and the general state is good, the fever may go down in 2-3 days through symptomatic treatment and therapy, but if the infection is more serious, with high fever or recurrent fever, the course of the disease is usually longer, and it may take a week or even longer to reduce the fever. In addition, the time it takes for the fever to go down depends on the strength of the baby’s own immunity and the degree of progression of the disease. If the immune system is strong and the disease is still under control, recovery will be faster and take less time. Babies who are in poor health and prone to illness may need more time to recover. For bacterial fever in children, it is recommended to go to the hospital in time for examination to clarify the cause of the illness and to treat it aggressively.