Povidone-iodine is a disinfectant mainly used for the disinfection of wound surface, while erythromycin is an antibiotic mainly used for the treatment of infections, the two can generally be used together. Povidone-iodine is mainly used for the disinfection of suppurative dermatitis, fungal infections of the skin, small burns of the skin, etc. Some users may have a transient local irritation, which generally does not require treatment, and is prohibited for use by pregnant women and breastfeeding women. Erythromycin is mainly used for infections caused by sensitive bacteria such as tonsillitis, pharyngitis, stomatitis, urethritis, etc., the use of gastrointestinal dysfunction, allergic reactions, reversible hearing loss and other adverse reactions, for macrolides allergy is prohibited. Iodophor and erythromycin can be used together, but specifically need to be used under the guidance of a doctor.