To trim pubic hair, you should choose the right tool, such as a special trimmer for trimming pubic hair. First, disinfect the perineum with iodine volts, the general range of disinfection is about 15cm in diameter, generally need to disinfect 3 times, use professional trimmer to cut short, preferably close to the skin for trimming, but must be careful not to hurt the skin, because the pubic skin is relatively tender, easy to be scratched, after trimming should be timely disinfected with iodine volts to avoid infection. The trimming of pubic hair is usually done a day before the surgery or before the catheterization, which can better expose the surgical field of view for better surgery and reduce the chance of infection. Normally, you should pay attention to change your underwear and underwear, and take a shower regularly to do a good job of personal hygiene, especially the hygiene of the perineum.