| Abstract;The purpose of the urethral catheter is to insert from the urethra to the bladder for catheterization. In the meantime, the bladder is punctured from above the pubis of the hypogastrium in the bladder centesis, and the urine is induced to extracorporeal without using the urethra as medium. The description was made in the following order : 1) Urethral catheter insertion and detainment (Outline of technique : Significance, application, contraindication, complication, things to be prepared, Explanation of technique : Insertion and detainment of catheter to the urethra masculina and points at the difficulty in insertion of catheter, detainment of catheter to the urethra feminina, attention for not closing the balloon space of the catheter and measures when catheter can not be removed), 2) Bladder centesis (Outline of technique : Significance, application, contraindication, complication, things to be prepared, explanation of technique and attention for advancing the catheter sufficiently and attention in the case of infants and toddlers). |