Key points of catheter care: 1. The catheter should be properly fixed during the activity, and it is necessary to ensure that the height of the drainage bag should be lower than the height of the urethra level, otherwise it may lead to painful pulling of the catheter, or the position of the catheter and the bag is too high and cause urine reflux; 2. Use disinfectant solution for disinfection of the urethral opening, generally use iodophor solution for disinfection, 1-2 times a day, and the disinfection process covers The disinfection process should cover the urethral opening, glans or the area around the female urethral opening; 3, the drainage bag of the catheter needs to be replaced every 1 week, and the catheter needs to be replaced at an interval of about 2-4 weeks; 4, intermittent bladder irrigation, sterile saline can be used for intermittent bladder irrigation, bladder irrigation at an interval of about 2-3 days. It is recommended to drink more than 2000mL per day; 5. If you find cloudy urine or abnormal color in the catheter, you need to go to the hospital for timely treatment, and if necessary, give drugs to prevent infection for treatment.