Causes of urinary tract infections in babies: 1, most of them are caused by not paying attention to personal hygiene, not washing after urinating or wearing diapers for a long time, a large amount of urine on the diapers, and retrograde infection caused by long-term contact with the vulva; 2, larger children do not wear diapers, but parents still give them open pants, and it is easy to cause infection when playing outside; 3, children’s immunity is relatively Low immunity and immaturity of the immune system is also a direct cause of urinary tract infections. The baby’s urinary tract infection lies in the prevention, every night with warm water to wash the vulva and the urethra, diapers or diapers should be changed diligently, and to give the child the habit of drinking more water, drink more water, urinate regularly, the prevention and treatment of urinary tract infections have obvious effects.