When the blisters on the feet are small, you can apply topical boric acid, zinc oxide, and ice chips ointment and other medications. If the blisters are large, the blisters need to be extracted first, and then local antibiotic ointment can be applied for treatment. If the blisters are small, the number is small, can be used externally boric acid zinc oxide ice ointment and other drugs, with astringent, dry, antibacterial effect. If the blisters are large and have a lot of fluid, you can use povidone-iodine and other local disinfection, and then use a sterile syringe to draw out the blisters. After extracting the blisters, topical antibiotic ointment can be used, such as erythromycin ointment, fusidic acid cream, mupirocin ointment and so on. If the blister breaks on its own, oozing more, can first use boric acid solution wet compresses; to reduce the oozing after the topical antibiotic ointment. Usually try to keep the feet clean and dry, wear comfortable and soft shoes and socks, avoid excessive friction. The use of the above drugs should follow the doctor’s instructions.