Objective: To evaluate the effects of Liu Zi Jue Qigong (LQG)-based breathing training on the curvature and range of motion (ROM) of the thoracic and lumbar spines in different positions. Methods: Forty-seven college students were selected as subjects and randomly divided into an observation group and a control group. In the observation group, 27 subjects received regular LQG-based breathing training for 12 weeks, while 20 subjects in the control group did not receive any intervention. The spine measuring instrument Spinal Mouse was adopted to detect the curvature and ROM of the thoracic and lumbar spines. Results: In the observation group, the changes in the curvatures of thoracic spine in the upright and forward-bending positions showed statistical significance after LQG exercise (P<0.05), while there was no notable difference in the control group. The comparison of ROM of the thoracic spine from the upright position to the forward-bending and load-bearing positions showed statistically significant difference in the observation group (P<0.05), while there was no significant difference in the control group. There was no significant difference in the lumbar curvature and ROM in the two groups after LQG exercise. Conclusion: LQG-based breathing training improves the curvature and ROM of the thoracic spine.