1.Definition A training method based on training abdominal breathing and emphasizing diaphragm movement. To improve abnormal breathing patterns, effectively reduce the use of auxiliary respiratory muscles, to improve respiratory efficiency and reduce respiratory energy consumption. 2. Indications and contraindications (1) Indications: spinal cord injury, chronic bronchial emphysema or obstructive lung disease, respiratory dysfunction due to severe scoliosis or kyphosis, etc. (2) Contraindications: unstable clinical condition, uncontrolled infection, respiratory failure, other clinical conditions that can lead to deterioration during training, severe cognitive deficits and mental illnesses that affect memory and compliance. 3.Equipment and appliances do not require equipment. 4.Operating method and steps (1) General method: The patient is in supine or sitting position (leaning forward to leaning position). Relax the abdomen, inhale slowly and deeply through the nose, and augment the abdomen; when exhaling, shrink the lips to blow out the air slowly, while contracting the abdominal muscles to promote the diaphragm upward. Inhalation and exhalation time ratio of about 1:2, when you first start practicing, a practice 1 to 2 minutes, gradually increase to 10-15 minutes each time, twice a day exercise. (2) Hip lift and exhalation method: supine position, both feet on the bed frame, raise the hips when exhaling, using the weight of the abdominal organs to push the diaphragm to the chest cavity, forcing the diaphragm to lift up; restore when inhaling, to increase the tidal volume. (3) blowing candle method: sitting position, the candle flame and mouth the same height, and then shrink mouth with abdominal breathing method to blow the flame to tilt the flame and not extinguished. 5, precautions (1) training environment quiet, avoid excessive interference with the patient. (2) Teach the patient the skill of relaxation, especially the relaxation of the inspiratory assist muscles. (3) Avoid holding the breath and excessively slowing down the respiratory rate to avoid inducing respiratory acidosis. (4) The principles of rehabilitation treatment for pulmonary diseases are persistent, gradual, and individualized. (5) Gradually increase the amount of exercise, according to the ability, in order not to cause obvious fatigue, otherwise it may induce or aggravate the attack of pulmonary disease.