Indoor swimming pools may cause urinary tract infections, often seen in patients with trauma or erosion of the urethra itself or a decrease in their own resistance, there is a risk of upstream infection. The pathogenic bacteria in the pool may cling to the external urethral opening or around the external genitalia and multiply abnormally or become more virulent, and enter the bladder from the urethra and cause changes such as urethritis and cystitis, and the patient may experience frequent urination, urinary urgency, painful urination, pain in the small abdomen, and even symptoms of back pain. At this time, you need to go to the hospital for urine laboratory tests to clarify the pathogenic bacteria of the infection and give targeted anti-infection treatment. At the same time, during the period of illness, it is forbidden to go swimming again to avoid aggravating their own symptoms and causing contamination and infection in other patients. When the patient’s immunity is in normal condition, the infection is generally less likely to occur, because the body normally has some resistance to exogenous bacteria. However, in some pathogenic conditions, pathogenic bacteria contamination may occur, especially in the external genital area in the source of contamination for too long exposure, can increase the probability of suffering from infection.