After insertion of the catheter, there is no need to urinate on one’s own, just open the clamp and the urine will naturally flow out of the body through the catheter. A urinary catheter is a tube inserted directly into the bladder from the urethra to facilitate the discharge of urine and relieve urinary retention. It is commonly used for patients who are unable to urinate on their own as a result of urinary tract obstruction, after anesthesia surgery, or for patients with neurogenic bladder. For those who are unable to urinate on their own, the catheter may need to be left in the body for a long period of time, lasting for months or years. In this case, cleanliness and hygiene should be maintained, and the catheter needs to be changed regularly to avoid urinary tract infections; in addition, bladder recovery training can be performed before the removal of the catheter, and the catheter can be opened regularly after being clamped shut to stimulate the bladder function in order to restore voluntary urination. In conclusion, for patients with indwelling urinary catheters, they need to do a good job of urinary catheter care to avoid the occurrence of urinary tract infections and other diseases. Patients need to inform the doctor in time to deal with any discomfort.