In 1997, the American Society for Cardiovascular and Pulmonary Rehabilitation pointed out that all respiratory diseases should be treated with respiratory rehabilitation after stabilization with standard treatment, and that a multidisciplinary treatment plan suitable for the individual patient should be developed, with the reduction of symptoms of respiratory disorders, improvement of daily living ability and social participation, and improvement of quality of life as important goals of respiratory rehabilitation. In short, scientific and effective rehabilitation treatment should be provided for patients with respiratory diseases. Respiratory rehabilitation is an indispensable part of the clinical treatment of respiratory diseases, and the main respiratory training techniques are lip retraction breathing and abdominal breathing. Lip retraction breathing is an easy-to-learn respiratory exercise technique, note! Lip retraction breathing should be performed in all cases of shortness of breath or dyspnea. After lip reduction breathing exercise, dyspnea will be effectively relieved, and lip reduction breathing is also very helpful in controlling panic. The purpose of abdominal breathing (diaphragmatic breathing) training is to increase the contraction capacity and efficiency of the diaphragm. Changing chest breathing to abdominal breathing is the most valuable of all methods applied to improve breathing mechanics. When you start practicing, each exercise takes about 3 minutes, twice a day. After mastering the technique, you can increase the number of exercises and time, and strive to make abdominal breathing become a habitual form of breathing. If there is any change in your condition, suspend or reduce the rehabilitation measures and take prompt medical treatment; stop exercising or take medical advice if you have any of the following symptoms: dizziness, fainting, headache, excessive shortness of breath, chest pain including palpitations, excessive sweating, fatigue, exhaustion, or any other discomfort.