Parents often bring their children to the hospital for urinary shutdown problems. Some parents believe that this is what Chinese medicine calls kidney deficiency, but pediatric clinics have found that the problem of urinary closure in children is related to urinary tract infections. The common causes of urinary closure in children are as follows: 1. Acute urinary tract infections: It is not uncommon for children to have acute urinary tract infections that cause urinary closure. There are two ways of urinary tract infection: one is retrograde infection, the urethral opening is very vulnerable to bacterial, especially E. coli contamination, bacteria retrograde along the urethra, into the bladder, ureter, kidneys and other parts of the urinary tract infection can lead to acute urinary tract infection caused by urinary closure; second is bloodstream infection, children’s skin, mucosal barrier function is not perfect, poor immune function, low resistance to infection, skin, oral cavity, trachea, lungs and other parts of the body was After the bacterial infection, inflammation is not easily confined, will enter the blood and with the blood flow to the kidneys, and through the ureter, bladder, urethra downstream, resulting in urinary closure. 2, in daily life, some parents for convenience, and let young children wearing crotch pants sitting around, or in the child defecation long after the diaper is not changed, after the stool just wipe the child stool without cleaning, etc., are common causes of morbidity.