There is a piece of skin on the back of the foot abrasion swelling pain pus, in aseptic environment, clear wound, change the medicine, and combined with anti-infective drug treatment, strengthen the local skin care. 1. Cleansing, dressing: first of all, the broken skin should be cleansed, the use of hydrogen peroxide to rinse the local pus out, if there is necrotic tissue need to be removed, and then use iodine povidone to disinfect, for the deeper wounds, if necessary, need to be stitched up, bandaged. 2. Anti-infection treatment: after the wound is cleaned, antibiotic drugs can be used externally, including erythromycin ointment, fusidic acid cream, etc., the wound is larger and deeper need to take oral antibiotics, such as cefaclor, erythromycin, etc., to prevent the spread of infection. 3. local care: after the above methods should be strengthened care, to maintain local skin cleanliness and hygiene, do not get wet, it is recommended to choose cotton socks and loose comfortable shoes. The skin on the back of the foot is abraded and red, swollen and pus-flowing, indicating that the infection has been secondary, it is recommended to go to the hospital in a timely manner to seek formal treatment, do not treat yourself in order to avoid delaying the condition.