Usually, ureteral catheterization does not cause kidney failure. Ureteral catheterization is mainly used for severe urethral stenosis, prostatic hyperplasia and other diseases caused by urinary difficulties or hematuria, etc. Need to help patients through ureteral catheterization to urinate, or to promote the recovery of hematuria, usually inserted from the patient’s urethra to the bladder, usually ureteral catheterization will not affect the kidney function and thus lead to kidney failure. And renal failure is due to a variety of renal diseases leading to impaired renal function, body metabolites and water discharge obstacles, causing metabolic acidosis, stimulating gastrointestinal mucosal edema vomiting, loss of appetite, and even coma and other symptoms. If the patient found that renal failure is recommended to go to the regular hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.