Injuries to the head caused by external forces or hitting hard objects are more common due to falling objects, traffic accidents and careless walking. Because of the rich blood vessels in the head, even a small, shallow wound can cause a lot of bleeding, giving the feeling of blood flowing all over the face, and the patient is often very scared at this time. The rescuer should quickly find the wound to stop the bleeding, such as a moment to find the wound, often indicates that the blood has stopped, you can ruffle the hair to find. If the wound is very deep, the trauma is large, after the hemostasis bandage needs to be sent to the hospital to deal with. After head trauma, such as the scalp is not broken (often due to blunt force), there is subcutaneous bleeding immediately available cold compress, while pressure, people from the TV boxing match to see the players at rest with cloth wrapped in ice in the affected area cold compress and pressure, is an example. Injured persons such as skull depression, rupture or light blood and water out of the nose, indicating that there is a skull fracture, must be sent to the hospital for treatment, the scene can be treated according to the principles of fracture rescue, such as fractures through the scalp or brain tissue bulging, can be treated according to the principles of abdominal organ bulging. Head trauma, although there is no fracture or scalp broken appearance, if the post-injury coma or lethargy, should check its pupils, such as the occurrence of asymmetry on both sides, unequal round, dilated or shrunken are indicative of serious intracranial lesions, should be sent to the hospital for treatment. After head impact injury (including sometimes it seems that the external force is not large trauma), in addition to some of the above need to send to hospital for treatment, when the wound is small, good conscious symptoms, after hemostasis, bandage treatment, should continue to observe to see if there are secondary headache, nausea, vision changes, limb movement disorders, etc.. If, after resting after trauma, the head swelling and headache are aggravated, even with nausea and vomiting, it indicates that the condition is aggravated and is a clear indication for emergency treatment.