As an antiseptic and disinfectant solution containing iodine, iodophor is good at killing bacteria, fungi, viruses, protozoa and spores. It can be used to treat burns, frostbite, cuts, abrasions, contusions and other general types of trauma. Iodine is containing iodine, potassium iodide and ethanol. It is used externally to disinfect the skin, but it should be deiodized with 75% alcohol or it will burn the skin. First, the use of povidone-iodine precautions: 1, a small number of people may be allergic to povidone-iodine, redness, swelling, rash and itching at the site of application, you should stop using povidone-iodine, scrubbing with saline or go to the hospital; 2, povidone-iodine can not be in the eyes, the face should be protected from double vision when disinfecting, once in the eyes immediately after a large number of water rinse to the hospital; 3, for the wounds that have been disinfected with “red mercury” can not be used again, “red mercury” can not be disinfected. For wounds that have been sterilized with “red mercury”, iodine can no longer be used. Second, the use of iodine precautions: 1, can not use iodine on a large area, in order to prevent a large number of iodine absorption and iodine poisoning; 2, generally not used in the occurrence of ulceration of the skin; 3, allergic to iodine, externally coated can be allergic to the occasional fever and generalized rash, iodine allergy is prohibited; 4, iodine should not be coated with red mercury (commonly known as red potion) at the same time to avoid the production of mercuric iodide and corrosion of the skin; 5, newborns should be used with caution. Although iodine and povidone iodine is only a word difference, but you must be clear. Really can not distinguish, be sure to look at the “ingredients” column whether there is alcohol, there is alcohol means that the irritation is a little more.