If the lip or the area around the mouth and lip are bumped and bleeding, the first step is to carry out hemostatic treatment, using sterile gauze or clean tissue to put pressure on the local wound to temporarily stop the bleeding. If the rupture is not very large or superficial, you can disinfect it with iodophor and apply erythromycin ointment or Bactrim ointment locally to prevent infection and achieve gradual healing. If the rupture is caused by teeth or external force and the rupture is large and difficult to stop bleeding, it is best to go to the emergency department or stomatology department of the hospital and perform debridement and suturing around the mouth and lips if necessary to stop bleeding and healing. After the operation, you can often apply mouthwash to prevent infection, inject tetanus intramuscularly if necessary, or apply antibiotics for prophylactic treatment.