The correct steps for catheter removal include informing the patient, position preparation, sterilization, emptying the water bladder, pulling and removing the catheter. 1. Inform the patient and position preparation: before removing the catheter, the patient should be informed of the need for this operation to eliminate the patient’s fear. Pull up the bed curtain to protect the patient’s privacy, and make the patient bend the legs slightly apart, or hands holding the knee to present the truncated position. 2. Disinfection: Use iodophor-soaked cotton swabs or cotton balls to disinfect the echidna twice, and pay special attention to the disinfection of the urethral opening. 3. Emptying the bladder: use a 10ml syringe to draw out all the water in the bladder, the amount of water should be the same as the amount of water injected when placing the catheter. 4. Pulling and withdrawing the catheter: first gently turn and pull the catheter, if the catheter can move outward, it means that the water bladder has been emptied and the catheter can be withdrawn. If the bladder is not emptied, forcible removal of the catheter may result in injury to the urethral mucosa. It is also necessary to record the amount of catheterized urine, the time of catheter removal, etc., and to classify and dispose of catheters, urine collection bags and other waste. Urinary catheters are often used for intraoperative catheterization, acute urinary retention, etc. The placement and removal of catheters should be carried out in strict accordance with the operating procedures.