This study aimed to examine the effects of thoracic cage mobilization on the respiratory function, spinal curve and spinal movement in patients with restrictive lung diseases. The subjects were ten community- dwelling elderly with a restrictive lung diseases when measured using a spirometer(FEV1/FVC≤65%, FVC<80%). They received an intervention over an eight-week period: three times a week and for 30 minutes a day. SPSS for Windows(ver. 19.0) was used to analyze all the collected data. Independent t-tests were used to examine changes before and after the intervention. The study's results showed statistically significant improvement(p<.05) in forced expiratory volume in 1 second(chage rate: .24±.25), thoracic curve(chage rate: -2.50±2.76), lumbar curve(chage rate: -.80±1.32), thoracic flexion(chage rate: 2.10± 1.52), thoracic extension(chage rate: -2.00±1.25), lumbar flexion(chage rate: 2.40±3.13) and lumbar extension(chage rate: -1.30±1.42). The results of this study suggest that the thoracic cage mobilization contribute to improve pulmonary function in patients with restrictive lung disease.