Blood blisters on the feet are relatively common in daily life, and can generally be caused by walking time, distance or shoes that do not fit the feet, so they can be initially treated according to the size of the blisters. Blood blisters are generally local tissue edema and exudation after skin abrasion. If the blood blister on the foot is small, generally do not need to deal with, keep the affected area clean and dry can be, will soon be absorbed and disappear; if the blood blister is larger, do not recommend self-treatment, can be under the guidance of a professional physician with a sterile needle to pick the blood blister, and then wipe the blood with a sterile cotton swab, and then follow medical advice with anti-inflammatory ointment coated with the affected area treatment, can also be disinfected after the syringe to draw out the bubble fluid, after the extraction can be applied externally boric acid solution, with Astringent, moistening, drying effect, after the external application can be applied fusidic acid cream anti-inflammatory. After the rupture of blood blister treatment, pay attention to keep the foot clean and dry to prevent secondary infection, avoid stimulating the wound with hot water, wear light and breathable shoes and socks, which is conducive to wound recovery, and the blood blister can generally crust over and heal in 1-2 weeks. Pay attention to no spicy food in the near future, and pay attention to supplementing protein and vitamins, which is beneficial to wound recovery.