If patients need long-term indwelling catheters for various reasons, it is important to provide good catheter care to avoid catheter-associated infections. The nursing measures are as follows: 1. If long-term indwelling catheter is expected to be needed, suprapubic cystostomy is recommended to place the catheter in the suprapubic area, which can reduce the chance of urinary tract infection and is suitable for patients who need up to 1 year or more of indwelling catheter. 2. The catheter needs to be changed regularly during the indwelling catheter, and it is recommended that the drainage bag be changed every 1 week and the catheter be changed every 2-4 weeks. 3, During the period of indwelling catheter, if the patient can drink water by himself, he should drink more water appropriately and keep the amount of water in about 1500ml per day. If the patient cannot drink water, bladder irrigation is recommended. 250ml of sterile saline can be used for bladder irrigation, which is kept for half an hour and then discharged out of the body. 4. For male patients, it is necessary to use pressure on the penis to discharge secretions from the urethra to prevent urethral infection or epididymal infection. For women it is necessary to disinfect the urethra with iodophor solution, 1-2 times a day.