Easy to urinary tract infection, the reasons are as follows: 1, urinary tract obstruction: such as urinary stones, prostate enlargement, ureteral tumors lead to poor urinary tract, it will produce urine stagnation. There is an old saying that flowing water does not rot, the pivot is not worm-eaten, if the urine drainage is poor, long-term stagnation in the urinary tract will produce infection, inflammation, so is one of the susceptibility factors of urinary tract infection; 2, the body’s immunity decline: such as diabetes, tumor disease, radiotherapy patients, or in taking anti-immune drugs, such as glucocorticoid drugs patients, will lead to a decline in the body’s immunity, the same will also lead to urinary tract infection; 3, the medical source of the decline in the immunity of the immune system; 3, the immunity of the immune system. Infection; 3, medical factors: such as long-term bedridden patients incontinence, the need for long-term indwelling urinary catheter, urinary catheter is a foreign body, left inside the urinary tract is also one of the triggering factors of infection; 4, gender relations: female patients urethra thick, short, straight, basically in 3-5cm, so more susceptible to bacterial invasion and lead to infection.