Abrasion blisters from wearing shoes can be sterilized with povidone-iodine and bandaged with gauze if the blisters are small. If the blister ruptures or is larger the blister should be punctured out and can be coated with zinc oxide ointment and mupirocin ointment to prevent local infection.
If you are wearing shoes that do not fit properly, it is possible to abrade the blisters on your feet. If the blisters are relatively small, they can be sterilized with iodophor or iodine, and after sterilization, they can be wrapped with gauze to avoid irritating the blisters, which can be absorbed on their own.
If the blister is relatively large or rupture occurs, you can use zinc oxide ointment, mupirocin ointment topical application of the skin on the surface of the blister, with astringent and anti-itching, to prevent infection.
If the blisters are abraded when wearing shoes, the blisters rupture and become infected and ooze blood and fluid, you need to consult a doctor in time and have it treated by a professional doctor.