|Purpose：This study investigated the effects of air stacking exercise on respiratory ability of patients with cervical cord injury. Methods：The subjects of this study were 30 patients with cervical cord injury were randomly placed in an experimental group(n=15) and a control group(n=15), respectively. Basic therapeutic exercise (ROM exercise, stretching exercise, strengthening exercise) were conducted twice a day for 30 minutes each time in all subjects and air stacking exercise was additionally conducted on the experimently group only. Air stacking exercise was conducted for 4 weeks, twice a day, 5 times a week and repeated 10 to 15 times each time. Lung capacity, MIC and, peak cough flow were measured and evaluated. Results：The results showed that FEV1, FVC, MIC, UPCF and APCF were significantly increased(p<05), but FEV1/FVC didn`t show the significant differences in an experimental group. In a control group, the findings showed that FEV1, FVC were increased significantly(p<.05) while FEV1/FVC, MIC, UPCF, and APCF didn`t show the significant differences.There were significant differences in FEV1, FVC, MIC, and APCF between a experimental group and a control group in the results of Pulmonary Function Test after conducting the pulmonary rehabilitation. However, no significant differences were found in FEV1/FVC, and UPCF between a experimental and a control group (p>.05). Conclusion：air stacking exercise has positive effects on the improvements of cough functions and that of pulmonary functions such as lung volume, lung elasticity in patients with cervical cord injury.