Patients with urinary tract infection do not need to use salt water for local cleaning, because urinary tract infection is mainly inflammation of the mucous membrane of the urinary tract, manifested as mucosal edema, congestion, erosion, etc., after the urine stimulation to produce local pain, frequent urination, urinary urgency and other symptoms, the use of salt water can only clean the skin around the external genitalia, cleaning the male foreskin, glans and other parts of the body, can not be directly cleaned the mucous membrane of the urinary tract, to achieve the purpose of inhibiting the bacterial infection of the urinary tract. The purpose of inhibiting the bacterial infection of the urinary tract can not be achieved. You need to go to the hospital for relevant examinations, after a clear diagnosis, the use of oral or intravenous infusion of antibiotics to directly kill the pathogenic bacteria, so that the mucosal inflammatory reaction gradually return to normal to achieve the purpose of healing. Patients with poor local hygiene of the external genitalia can use water for local cleaning, or go to the hospital to buy sterile saline for local cleaning, do not need to configure their own, the configuration can not achieve the state of sterility, and can not grasp the better concentration of saline, it is recommended to go to the hospital to deal with, do not need to prepare their own saline for local cleaning.