Povidone iodine, also known as pyrrolidone iodine, has no areas where it can’t be used, except for the eyeballs and ear canals, which need to be used with caution. Pyrrolidone iodine is a kind of disinfection product commonly used in the clinic, with a wide range of applications, no matter whether it is for surgical skin, mucous membranes or general wounds, arm disinfection for medical personnel, etc. It can even be used to flush the abdominal cavity and wounds after dilution, and there is no absolute contraindication site, but only in the eyeballs, ear canals, and other organs need to pay attention to the use of the time. Because pyrrolidone iodine may cause damage to the ear canal, cornea and eardrum, so it needs to be used very carefully, especially in head and neck surgery when you need to do a good job of preventing the flow of work to avoid problems. Pyrrolidone iodine generally has little effect on the body, but it is best to use it according to the instructions or doctor’s guidance in order to avoid bodily harm.