The child’s leg is bumped, depending on how the injury is handled is different. If the child’s leg is just bumped epidermis does not matter, in general, as long as the child to do a good job of local cleaning and disinfection care can be, you can choose 75% alcohol or Anl iodine, iodophor, etc., from the inside out to disinfect the child’s skin, and then naturally exposed to dry, the vast majority of minor epidermal bump injury, 3-4 days can be significantly better. If the child’s leg is stabbed by a relatively sharp object and there is a deep local wound, it is necessary to take the child to the hospital to deal with the deep wound, and it is generally recommended to flush the deep part of the wound with hydrogen peroxide. If necessary, it is recommended that a tetanus injection be given. For wounds that do not need to be bandaged, do a good job of cleaning the wound and at the same time, topical anti-inflammatory ointment can be applied to the wound to prevent infection. If the wound area is relatively large, it also needs to be bandaged, after which it needs to be cleaned and disinfected and changed regularly every day to avoid infection. Also note that if there is an increase in pain and limited movement, be careful of muscle, nerve or bone damage and seek medical attention in a timely manner.