The main process of female catheterization is that the patient lies flat, the doctor sterilizes the catheter, places a sterile catheter and then fixes it. First of all, the patient first lying flat on the bed, after removing the pants will be separated legs, wearing sterile gloves on the urethral opening to disinfect, and then lay a sterile hole towel, will be separated from the labia majora and minora, and then disinfect the urethral opening again, take out the catheter lubrication inserted into the urethra of about 10 centimeters or to see the emergence of urine, and then extract saline 10 ml injected into the balloon, and then fix the catheter. Catheterization of women, first of all, to ensure the principle of asepsis, the patient needs to go to a regular hospital visit, by professional doctors or nurses to operate.