How to check after a head fall: First, check the patient’s consciousness, determine whether the consciousness is clear and whether there is a disorder of consciousness, manifested as drowsiness, lethargy or coma, etc. Second, check the patient’s pupils, observe the size of the patient’s pupils, whether the light response is sensitive, and whether the pupils are dilated. Observe the patient’s vital signs, monitor blood pressure, heart rate, pulse rate, respiration, etc. to see if they are stable. Fourth, head trauma is often combined with injuries to other parts of the body, so also check the patient’s lungs as well as the abdomen and extremities, and use a stethoscope to check whether the patient’s respiratory sounds are diminished and whether there is a hemopneumothorax, etc. Also check the abdomen for pressure pain, rebound pain, abdominal distension, and fracture of the limbs. V. Immediately go to perform a cranial CT examination to observe whether the patient has bleeding in the head and whether there are fractures in the skull.