Mechanical ventilation, as the name suggests, is a treatment that uses artificial equipment to help patients breathe. Its main purpose is to help patients breathe when they have respiratory dysfunction and cannot rely on their own ability to breathe normally to maintain the body’s need for oxygen, and to achieve the purpose of treating the disease at the same time. If necessary, mechanical ventilation needs to be applied in time, do not wait until the condition is already very serious, then use mechanical ventilation, miss the timing of the disease is very great impact on the disease, may not be ideal. Therefore, the key is to judge the patient’s condition correctly and use mechanical ventilation in a timely manner.