Women’s urinary catheters are replaced about once every 2-4 weeks, which has a certain relationship with the usual care and the material of the urinary catheter. Generally, the replacement time of latex urinary catheters is relatively short, while the replacement time of silicone urinary catheters can be extended appropriately, or the replacement time of antibacterial coated urinary catheters can also be extended appropriately, but in principle, they should not exceed 1 month. If you usually do a good job of disinfecting the urethra and flushing the urinary catheter and other care measures, you can change the catheter at a slightly longer interval, but if you usually do not do a good job of caring for the urinary catheter, you need to change the catheter as early as possible in about 2-4 weeks to avoid infection. If you need to wear a catheter for a long time, try to choose suprapubic cystotomy from the treatment principle to reduce the probability of urinary tract infection. Long-term retention of the catheter urethral mucosa chronic irritation for a long time, while the urinary catheter can also lead to urethral bulb gland secretion dysfunction, more prone to urinary tract infections.