Symptoms in critically ill neocoronary patients include respiratory symptoms, hypoxia, decreased mobility, and the potential for a variety of complications. 1. Respiratory symptoms: Many critically ill patients will have obvious respiratory symptoms, manifested as dyspnea and dry cough. 2. Hypoxia: patients with severe disease will have symptoms of hypoxia, manifested by shortness of breath and respiratory rate of not less than 30 times/minute. 3. Decreased activity ability: manifested as decreased activity endurance, for example, normally walking normally without feeling tired, but after the onset of the disease, there will be obvious fatigue. 4. Complications: for patients with poor physical condition, it may cause many complications, such as metabolic acidosis, coagulation disorders, multi-organ failure, and even acute respiratory distress syndrome. Patients with severe new crown need to actively cooperate with the treatment to reduce the emergence of complications and sequelae, in the recovery stage of the patient’s condition, pay attention to rest, and a reasonable diet, to ensure adequate sleep, to promote the recovery of patients.