The fall leads to local skin abrasion and broken skin, you can first clean the wound, using water, saline or hydrogen peroxide for wound rinsing, so as to avoid residual sand and dust or impurities at the wound, and use sterile gauze dipped in dry wound surface moisture. Then you can use medical iodophor, ethanol or tincture of iodine for local disinfection. If the local abrasion is not serious, bleeding less, after disinfection, pay attention to keep the wound clean and dry, avoid contact with water, generally a few days to scab, to avoid scratching, and so scabs can fall off naturally. If the abrasion is more serious and bleeding is more, sterile gauze can be used to bandage the wound after disinfection and change the medicine every day, so as to promote wound healing and avoid secondary trauma or secondary infection. Be careful not to bandage too tightly, so as not to affect blood circulation, which is not conducive to wound healing. If the bruise site is at the joint, care should be taken not to move the joint frequently, which may cause the wound to crack and cause secondary injury. If the abrasion skin local infection, pus and other conditions recommended timely medical treatment, to avoid self-treatment aggravate the symptoms. In addition, if the bruise has contact with rusty metal substances, there may be a risk of tetanus infection. Therefore, after timely treatment, it is recommended to go to a nearby hospital for emergency medical examination by a professional doctor to clarify the need for tetanus vaccination to avoid tetanus infection by tetanus bacilli.