A bruised leg, which can manifest itself as localized pain and bleeding, should be promptly treated further at a hospital or health center. First of all, saline and hydrogen peroxide should be repeatedly rinsed three times, and if there is an obvious laceration, debridement sutures should be performed under local anesthesia to remove the inactive tissue and explore it in detail, especially to remove foreign bodies to avoid secondary infection. The wound should also be carefully cleared of secretions or foreign tissues and then closed with nodular sutures, and postoperative anti-infective treatment should be observed. Elevation of the affected limb during the acute phase can promote venous blood return and reduce local swelling to a certain extent. In addition, a tetanus sensitivity test should be performed within 24 hours of injury, a refined tetanus antitoxin injection should be given intramuscularly, and the stitches should be changed and removed regularly.