The replacement time of the urinary catheter is related to the material of the catheter and the time it needs to be left in place, and it is usually replaced once in about 1-2 weeks, which varies from person to person. If a urinary catheter needs to be left in place for a long period of time, it is generally recommended that the catheter be replaced in about 1-2 weeks to avoid inducing urinary tract inflammation and infection, and it is partially recommended that a cysto-abdominoplasty be performed to place a long-term urinary drainage device. If the urinary catheter is inserted to prevent the inability to urinate after surgery, it can usually be removed in 2-3 days through functional bladder exercises after the effect of postoperative anesthetic drugs wears off. If it is after urological surgery, the urinary catheter is usually left in place for a longer period of time, mostly around 1-2 weeks, and it is necessary to consider replacing the urinary catheter or removing it according to your recovery situation. During the catheterization process, we should pay attention to drinking more water and actively carry out bladder function exercises to avoid the situation of not being able to urinate after the catheter is removed.