Urinary tract infections, or urinary tract infections, are inflammatory diseases of the urinary tract caused by bacteria and others. Pyelonephritis is the most common. They can be divided into lower urinary tract infections such as urethritis and cystitis and upper urinary tract infections such as ureteritis and pyelonephritis. Lower urinary tract infections can exist alone, while upper urinary tract infections are usually associated with lower urinary tract infections. The two are usually not easily distinguished and are often referred to collectively as urinary tract infections. The most common pathogenic bacteria are Escherichia coli, followed by Proteus, alkali-producing bacteria, Enterococcus, and Staphylococcus, which often cause morbidity through infectious routes such as upstream infection, lymphatic system infection, hematogenous infection, and direct infection. 1, urinate immediately after sex: go to the bathroom immediately after intercourse, even if the bacteria have entered the bladder, it can be expelled from the body through urination. 2, timely urination: when urinating, urine flushes out the bacteria from the urethra and vaginal opening, which has a natural cleaning effect. 3.Avoid pollution: The most common bacteria that cause infection is E. coli. Normally, it is parasitic in the intestine and does not cause disease, but if it enters the urethra by the anus, it will lead to inflammation of the urethra, so wipe with clean toilet paper after stool, in the order of front to back, so as not to pollute the vaginal opening. 4, supplemental vitamin C: vitamin C can improve the acidity of urine, so that various bacteria that induce urinary tract infection is not easy to survive, so drink more orange juice, citric acid, kiwi juice and other vitamin-rich drinks are beneficial to prevent urinary tract infection. 5. Consult your doctor: If you experience symptoms such as discomfort in urination, you should seek medical attention as soon as possible.