As an antiseptic disinfectant containing iodine, iodophor has a good killing effect on bacteria, fungi, viruses, protozoa and budding 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 for skin disinfection, but 75% alcohol should be used for deiodination, otherwise it will burn the skin. I. Precautions for using iodophor: 1. A small number of people may be allergic to iodophor, redness, swelling, rash and itching at the site of application should stop using iodophor again, scrub with saline or go to the hospital; 2. Iodophor should not be used in the eyes, the eyes should be protected when disinfecting the face, once in the eyes immediately rinse with plenty of water and go to the hospital; 3. For wounds that have been disinfected with “red mercury ” disinfection of the wound can not be used again iodine volt. II. Precautions for the use of iodine: 1. Iodine should not be used over a large area to prevent iodine poisoning due to absorption of large amounts of iodine; 2. It is generally not used for skin where ulceration occurs; 3. For those who are allergic to iodine, external application can cause allergy, occasionally fever and generalized rash, and is prohibited for those who are allergic to iodine; 4. Iodine should not be applied simultaneously with red mercury (commonly known as red potion) to avoid producing mercury iodide and corroding the skin; 5. Use with caution for newborns. Although there is only a word difference between iodine and iodophor, but you must distinguish clearly. If you can’t tell the difference, you must look at the “ingredients” column to see if there is alcohol, which means that the irritation is greater.