Common rehabilitation assessment methods for pulmonary function are as follows: 1. CAT scale: a score of less than 10 indicates that the patient is at low risk; conversely, a higher patient score indicates that the patient is at higher risk; 2. mMRC scale: divided into 0-4 levels, 0-1 level indicates that the patient is at low risk, and more than 2 levels indicates that the patient is at high risk and needs rehabilitation intervention; 3. cardiopulmonary exercise test: the gold standard for pulmonary function rehabilitation assessment; 4. bicycle test; 5. unassisted exercise test 6 minute walk test, the longer the walking distance within 6 minutes indicates that the patient’s pulmonary function is better.