The following measures can be used to deal with the case of children who have broken their mouths: first, local disinfection of the wound. You can apply iodophor, alcohol, local disinfection of the broken lip area to prevent secondary bacterial infection. If the wound is not deep, no special treatment, generally can be self-healing. If the child’s mouth is deeper and bleeds more, the wound should be sutured in a timely manner. At the same time, you need to actively carry out tetanus disease prevention, such as the application of tetanus toxoid to children, tetanus toxoid need to do skin test, skin test negative before application.