The hemorrhage of a twelve-year-old girl is related to trauma and the digestive tract, etc. The cause of the hemorrhage needs to be clarified and treated, and emergency treatment and surgery can be taken, as follows: 1. Trauma: hemorrhage caused by trauma in twelve-year-old girls can be treated urgently. Local cleanliness should be maintained to avoid infection. Stop bleeding treatment, if the bleeding does not stop, it is recommended to use gauze bandage, but not for too long, so as to avoid the distal limb ischemia and necrosis. If parents are unable to determine the severity of the wound or are unsure whether it will cause subsequent illnesses, go to the hospital promptly after emergency treatment and ask the doctor to examine the wound and make a judgment. 2. Gastrointestinal bleeding: twelve-year-old girl due to gastrointestinal bleeding, it is recommended to go to the hospital for relevant examinations, clear the bleeding site of the patient to do a thorough hemostasis, and actively replenish the patient’s fluid therapy, as well as the patient needs to fast, if the patient is conservative treatment is not complete hemostasis, if necessary, to do the surgical treatment. Twelve-year-old girl hemorrhage may have other reasons, it is recommended to go to the hospital to check, so as not to delay the treatment of the condition.