If the respiratory rate exceeds 30 breaths/min, it is recommended to give active symptomatic support treatment with oxygen, and also give active etiological treatment according to the cause. If the respiratory rate exceeds 30 breaths/min, it is due to emotional excitement or mental tension, it is recommended to give symptomatic treatment with sedation and oxygen to reduce hyperventilation of the lungs to relieve the clinical symptoms of the patient. Increased respiratory rate can also occur in some underlying lung diseases, and the patient can improve the symptoms of hypoxia by increasing the respiratory rate. Patients with milder conditions can be treated with intermittent or continuous nasal catheter and mask oxygenation; patients with more severe conditions can be treated with respiratory support such as non-invasive ventilator or tracheal intubation, and by improving the patient’s hypoxic symptoms, the patient’s respiratory rate can decrease and clinical symptoms can be effectively improved.