The differences between medical alcohol and povidone-iodine include different main ingredients, different disinfecting effects, and different irritation when used. 1. Different ingredients: the main ingredient in medical alcohol is ethanol, while the main ingredient in iodophor is a kind of iodine called complexed iodine. 2. Different disinfection effect: alcohol has the effect of degreasing, for local oil contaminated wounds, the use of alcohol disinfection will be more effective. When using povidone-iodine to disinfect wounds contaminated with grease, the disinfection effect is relatively poor. 3. Different stimulation when disinfecting: medical alcohol will be stronger when using stimulation, after the alcohol enters the wound, it will cause the wound to be strongly stimulated, resulting in strong pain; povidone-iodine is less stimulating, and usually does not produce obvious pain after entering the wound. Patients should seek medical treatment in a timely manner after the appearance of wounds, under the guidance of physicians to disinfect and debridement treatment, so as not to cause adverse consequences.