There are many common first aid measures, the more common ones are chest cardiac compressions, tracheal intubation, mechanical ventilation, cardiac electric defibrillation, gastric lavage, and blood purification techniques, which are all very common first aid measures and should be carried out according to the patient’s condition for timely treatment. If a patient suffers from respiratory arrest due to various reasons, chest cardiac compressions can be given immediately and tracheal intubation can be performed in time; if the patient does not breathe on his own, a ventilator needs to be applied for assisted breathing; if the patient develops ventricular fibrillation, defibrillation can be performed. For patients with acute renal failure, blood purification can be performed, and these emergency measures can save patients’ lives and reduce mortality.