Female surgical insertion of urinary catheter is clinically known as catheterization, and its operation process can be divided into vulvar cleansing, positioning, disinfection and catheterization. 1. Vulvar cleansing: first of all, before catheterization, the vulva of the female patient should be cleaned, and the vulva must be kept clean. 2. Positioning: After cleaning, take off the patient’s pants and legs first, and let the patient take the supine position, bending both legs at the knee and then spreading them out, so that the whole vulva is fully exposed. 3. Disinfection: the first disinfection is mainly carried out from the outer side to the inner side of the perineum, while the second is carried out from the urethral opening, from the inside to the outside and from the top to the bottom. 4. Catheterization: first, the front end of the catheter is lubricated with lidocaine gel paste, and then the catheter is slowly fed into the urethral opening by holding it with hemostatic forceps. If urine flows out of the catheter, then saline is injected into the balloon, and then the drainage tube can be connected. Women who want to undergo catheterization must pay attention to personal hygiene. Strictly aseptic operation is carried out by professional doctors in regular hospitals to prevent urinary tract infection, which can cause harm to the body.