Both iodophor and iodine are used for medical disinfection, and the effective disinfection component is iodine. The main differences are the following: 1. Different components: iodophor is a single iodine dissolved and dispersed in polyvinylpyrrolidone, and forms an unstable bond with it, medical iodophor usually has a low concentration, usually not more than 1%, and iodine, also known as tincture of iodine, is formed by dissolving potassium iodide in ethanol; 2. Different methods of use: iodophor can be used directly Use: Iodophor can be used directly, while iodine needs to be deiodized with alcohol after application to avoid damage to skin tissue, etc.; 3. Different irritation to tissues: Iodophor is milder and less irritating to tissues compared to iodine. Iodine cannot directly contact wounds and mucous membranes, which may cause severe pain and even tissue necrosis. Iodine volts cause relatively less pain and can be used on mucous membranes.