Extraction of urinary catheter is divided into three parts, firstly the preparation before operation, secondly the extraction of urinary catheter, and finally the matters after extraction of urinary catheter. 1. Pre-operation preparation: the operator should wash his hands, wear a mask, check the medical prescription, infusion card, check with the patient’s name, gender, age, hospitalization number. 2. Extraction of urinary catheter: assist the patient to set up the position, take the supine knee position, hip pad treatment towel, check the supplies, wear gloves, use the syringe to draw out the liquid in the balloon, then gently pull out the urinary catheter, and finally withdraw the supplies. 3. Matters after pulling out the urinary catheter: assist the patient to put on pants and take a comfortable position, organize the bed sheet, open the window for ventilation. Classify and dispose of medical waste, wash hands, and keep records. In summary, do not pull out the urinary catheter by yourself, it should be pulled out by a professional doctor after checking the condition of the patient.