The reasons why women are prone to urinary tract infections are mainly caused by the special structure of the female reproductive system, the fact that female vaginal secretions are also a better medium for the use of bacteria to multiply more easily, and the slow flow of urine to form a mild effusion. Urinary tract infection, also known as urinary tract infection, is an inflammation of the urinary tract caused by pathogens growing and multiplying in the urinary tract of the organism and invading the mucous membrane or tissue of the urinary tract. Bacteria are the most common pathogens, while fungi, viruses, and parasites can also cause infections. What are the factors for the development of slow urine flow? More than 95% of urinary tract infections are caused by a single bacterium. In 90% of outpatients and about 50% of inpatients, the pathogenic bacteria are Escherichia coli, and the serotypes of this bacteria can be more than 140 kinds, and the uropathogenic Escherichia coli is the same type as the Escherichia coli isolated from the patient’s stool, which is mostly seen in asymptomatic bacteriuria or uncomplicated uropathogenic; Aspergillus, Bacillus pneumoniae, Klebsiella pneumoniae, Pseudomonas aeruginosa, Streptococcus faecalis, etc. Candida albicans and Cryptococcus spp. infections are seen in patients with diabetes mellitus, glucocorticoids and immunosuppressive drugs, and after renal transplantation; Staphylococcus aureus is seen in skin trauma and drug addicts causing bacteremia and sepsis; viruses and mycoplasma infections are rare but tend to increase in recent years. Multiple bacterial infections are seen in indwelling catheters, neurogenic bladder, stones, congenital malformations and vaginal, intestinal and urethral fistulas.