How soon to remove a urinary catheter after bladder surgery is variable and varies from person to person. The time to remove the urinary catheter after bladder surgery needs to be based on the scope of removal of the surgery and the degree of recovery of the bladder, which can be categorized into 1~3 days after surgery, about 1 week after surgery and 1~2 weeks after surgery. 1. If the scope of surgical resection is not large or the surgical resection is a small tumor of the bladder, and only the local bladder wall is thinned, the time for removing the urinary catheter will be relatively shorter, and it can be taken 1~3 days after the operation. 2. If the scope of surgical resection is wider or deeper, a urinary catheter may need to be left in place for about 1 week to allow the bladder to get sufficient rest, and then removed after the bladder has fully recovered its function of expansion and contraction. 3. If the procedure is a partial cystectomy, a urinary catheter will be left in place for 1 to 2 weeks. Because part of the bladder tissue is removed and then stitched up, the trauma is relatively large and the recovery time is relatively long. Leaving a urinary catheter in place after cystoscopic surgery allows the bladder to empty of urine and facilitates wound healing after surgery. Therefore, patients who need to remove the catheter must be operated by professionals such as doctors or nurses, and should never remove the catheter by themselves to avoid causing damage to the urethra. If the patient has any discomfort, he/she needs to consult the doctor for examination and early treatment.