Ventilator-associated pneumonia is relatively common in the ICU, for the onset of the characteristics of usually take positive preventive and nursing measures, as follows: 1, general ventilator-associated pneumonia refers to the use of ventilator patients occur, after a week or so is the high incidence, so after the application of ventilator to consider taking appropriate measures, such as hope that earlier ventilator off the machine and pull out the tube, this is the best prevention; 2, patients ventilator Can not be withdrawn in the short term, need to take protective mechanical ventilation, because after the application of the ventilator, although it can correct the hypoxia, discharge carbon dioxide, at the same time, inappropriate use of the ventilator will lead to lung injury, which will lead to more prone to the emergence of ventilator-associated pneumonia; 3, application of the ventilator patients with the head of the bed elevated more than 30 degrees, so as to reduce the incidence of ventilator-associated pneumonia, to reduce the incidence of regurgitation, including the oral cavity 4, there are also studies suggesting that the application of acid-producing drugs, intravenous acid-producing injections can reduce the incidence of ventilator-associated pneumonia; 5, systemic nutritional support is also very important, the patient’s systemic nutrition is strengthened, immunity is enhanced, the primary infection, pneumonia can be more quickly recovered, and the probability of ventilator-associated pneumonia will also be greatly reduced.