When women undergo disposable catheterization, they need to be placed in the supine position first; the perineum should be disinfected three times before catheterization is carried out; and a drainage bag should be connected after catheterization to complete the catheterization process. 1. Position: The patient should be in supine position, with legs bent at the knees and slightly adducted to reveal the entire vulva. 2. Disinfection: disinfection is required three times, the first time is from the outside to the inside to disinfect, the second time from the outside of the urethra from the inside to the outside, top to bottom to disinfect, the third time to re-disinfect the outside of the urethra. 3. Catheterization: After fully lubricating the catheter, the front end of the catheter is held with tweezers and slowly fed into the urethra. As the female urethra is relatively short, inserted into the urethra 6~8cm, you can see the urine outflow. Insert another 5cm or so, and inject about 20ml of saline into the balloon tube. 4. After the end of catheterization, connect the drainage bag and fix the catheter at the same time to complete the catheterization. The specific operation of disposable urinary catheterization for women can be operated by the doctor by consulting the relevant professional doctors.