If a child accidentally breaks his lip, he needs to be treated in the following aspects: first, give the child local disinfection, because after the lip is broken, the local skin is damaged, and it is very easy to cause secondary infection, so it is necessary to apply alcohol for local disinfection. Secondly, stop bleeding, if the amount of bleeding is relatively large, you can apply hemostatic min or hemostatic aphthous acid to stop bleeding. In addition, local suture, if the lip is broken very much and deep, need surgical suture treatment. It is also necessary to inject tetanus, if the lip knocked out of the wound is particularly deep should prevent the occurrence of tetanus, should be timely injection of tetanus.