1.Definition Respiratory training method to improve the strength and endurance of respiratory muscles and to relieve dyspnea. 2, indications and contraindications (1) indications: weak respiratory muscle strength and endurance. (2) Contraindications: unstable clinical condition, respiratory failure, other clinical conditions that may lead to deterioration during training, serious cognitive deficits, etc. 3.Equipment and appliances resistance respirator, sandbags. 4, operation method and steps (1) enhance inspiratory muscle: use resistance respirator (with different diameter inner tube to adjust the resistance) to make resistance during inspiration and no resistance during exhalation. Start practicing 3 to 5 minutes, 3 to 5 times a day, and later increase to 20 to 30 minutes. (2) enhance the abdominal muscles: patients take the supine position, abdominal sandbags placed for abdominal exercises, the beginning of 1.5 ~ 2.5kg, later can gradually increase to 5 ~ 10kg, each exercise 5 minutes; can also supine position repeatedly two lower limbs to the chest flexion of the hip and knee movements, to enhance the abdominal muscles. 5, precautions (1) training environment quiet, to avoid excessive interference with the patient. (2) Patients wear loose clothing, take a comfortable and relaxed position. (3) Avoid holding the breath and excessively slow down the breathing rate, so as not to induce respiratory acidosis. (4) Be persistent and progressive. The amount of exercise should be increased gradually, depending on the person, in order not to cause obvious fatigue. (5) In addition to respiratory exercise, patients can also perform moderate physical training, such as walking, climbing steps, tai chi, etc. Pay attention to nutrition and quit smoking.