How many days of antibiotics are usually given to infants with urinary tract infections is based on the condition and the type of urinary sensation, as explained below. 1. Symptomatic urinary tract infection: after urine bacterial culture, empirical use of antibiotics course of 7~10 days, for children with combined urinary tract deformity course of 10~14 days, after the start of treatment, should be followed up with urinalysis, if necessary, follow up with urine bacterial culture in order to guide and adjust the use of drugs. 2. Asymptomatic bacteriuria: Simple asymptomatic bacteriuria usually requires no treatment, if combined with urinary tract obstruction, the presence of urinary tract deformities or previous infections in children, the course of treatment is 7-14 days, followed by a small dose of antibacterial drugs prophylaxis, until the deformity of the urinary tract is corrected. 3. Recurrent urinary tract infection: it can be divided into recurrence and re-infection, which can be caused by different or the same strains of bacteria. After urine bacterial culture, 2 kinds of antibacterial drugs should be selected for treatment, and the course of treatment should be 10~14 days, and then a small dose of drugs should be given to maintain in order to prevent recurrence. In order to avoid urinary tract infection and promote the healing of urinary tract infection, we should pay attention to the hygiene of the perineum of the child, do not wear breathable diapers, wash the vulva and correct the urinary tract deformity in time, if there is any discomfort, please consult a doctor in time, so as to avoid delaying the condition.