First aid care measures for trauma: 1. closely observe the patient’s vital signs, focusing on respiration, heartbeat, and blood pressure. 2. prepare resuscitation instruments, materials, and drugs, and make corresponding resuscitation measures according to the doctor’s orders at any time. 3. establish intravenous access, and generally give blood volume replenishment first to correct the state of shock caused by trauma. 4. fix the fracture, and if a fracture of the cervical or lumbar spine is suspected, the patient must usually lie down and fix the suspected fracture with a cervical collar and lumbar collar. 5. If cervical or lumbar spine fracture is suspected, usually the patient must lie down and fix the suspected fracture with cervical and lumbar circumference. 5.Wound dressing to stop bleeding, if wound bleeding occurs, generally after strict disinfection, then use clean dressing to dress the wound with pressure. If there is heavy bleeding, local pressure dressing cannot stop the bleeding, the proximal limb of the wound must be tied to block the blood flow, so as to achieve the effect of hemostasis.