In the nursing care of patients with respiratory failure, it is important to strictly monitor vital signs daily, as respiratory failure is considered an emergency and critical condition clinically. Observe the patient's blood pressure, consciousness state, and respiratory rate. At the same time, good skin care and oral care should be maintained to prevent aspiration pneumonia and bedsores. Most importantly, secretions should be cleared in a timely manner, including phlegm. Conscious patients should be encouraged to cough forcefully. For patients who are weak in coughing, assist them in turning and patting their backs regularly to facilitate the expulsion of phlegm. For comatose patients, mechanical suction can be used to maintain airway patency. It is advisable to avoid factors that may cause breathing difficulties, such as cold wind and poor air circulation. Pay attention to enhancing physical exercise appropriately, preventing colds, and maintaining a regular lifestyle.