Urinary tract infections are pathogens that invade the urinary tract and eventually lead to urinary tract infections, including acute pyelonephritis, ureteritis, and cystitis and urethritis. The vast majority of pathogens of urinary tract infections belong to bacteria, with gram-negative bacilli being the most common in clinical practice. The causes of urinary tract infections in patients are clinically seen in the following areas: 1. Due to the patient’s congenital anatomical abnormalities, such as the presence of urinary tract obstruction, urinary tract obstruction, which is then very prone to urinary tract infections, and urinary tract infections are often recurrent. Patients with recurrent urinary tract infections must pay attention to an ultrasound examination of the urinary tract to clarify the presence of anatomical obstruction; 2. Due to the patient’s own immune function, such as congenital immune function defects, or acquired immune function defects, as well as suffering from immune system diseases using hormone immunosuppressants, or patients suffering from tumors undergoing chemotherapy, etc., can lead to a significant decrease in immune function, which allows pathogens to reproduce resulting in urinary tract infections; 3, due to insufficient local cleaning, urinary tract cleaning on the one hand is to carry out daily The process of urination itself is the process of flushing and cleaning of the urinary tract, so be sure to drink more water, especially warm plain water, which is conducive to the prevention of urinary tract infections.