ORAL CARE is an important part of the operation of basic nursing techniques and is one of the means to keep oral cavity clean and prevent diseases. It can improve the sensitivity of cough reflex of patients with artificial airway, the oral care of patients with oral tracheal intubation has always been a thorny nursing issue. In recent years, many clinical nursing workers have been discussing this problem, but there is no safe and effective method which has been accepted by the majority of nursing workers. This article first analyzed the commonly used oral care methods, including cotton swab method, rinse method, brush teeth method and gargle method, and on this basis focused on oral care of patients through oral tracheal intubation.