A blocked ureter indicates that there may be a blood clot, there may be pus, or there may be a large amount of organic or inorganic salts deposited in the ureter, resulting in the presence of a blocked ureter. If there is a blood clot it is recommended to use transurethral pressure flushing to flush the blood clot out of the ureter, and continued bladder irrigation will soon provide relief. If there is a large amount of urine crystals is not drinking enough water, it is recommended to increase the amount of water to drink, so that the blockage of the ureters will also be gradually relieved. If there is a lot of pus and urine in the ureter you should drink a lot of water and take a broad-spectrum antimicrobial agent to make the urethra open. Urinary catheter continued to stay time, if the time is long will also lead to blockage, it is recommended that patients with long-term indwelling urinary catheter should be replaced every two weeks.