General first aid measures include oxygenation to maintain oxygenation of the body; intravenous access to maintain circulation; cardiac monitoring to keep vital signs stable; pharmacological measures include: sedation, analgesia, antispasmodic, respiratory stimulation, cardiac stimulation, diuretic, elevation, dehydration, etc.; operational first aid measures include: chest compressions, midpoint of the line between the two nipples, 100-120 times/min, depth 5-6 cm, compression to ventilation ratio 30:2; Artificial respiration operation methods are mouth-to-mouth, mouth-to-nose, mouth-to-nose, note that effective artificial respiration must have the rise and fall of the thorax; methods of opening the airway: tilting the head and lifting the chin, lifting the jaw with both hands, tilting the head and lifting the neck, etc.; Heimlich, airway obstruction foreign body first aid methods: encircle the patient’s epigastrium, backward and upward rapid successive squeezing, a cycle of failure can be repeated; and defibrillation; and surgical first aid Methods: hemostasis, bandaging, immobilization, and transport.