Purpose: This study was to examine the effects of Dan Jeon Breathing on physical health promotion in middle aged women. Method: This study was quasi-experimental with a nonequivalent control group pre-post test design. The subjects were classified into an experimental group and a control group. The experimental group had 21 middle-aged women who did Dan Jeon Breathing, the control group consisted of 22 middle aged women. Dan Jeon Breathing was carried out for 40 minutes a day, 3 times a week for 6 weeks. The difference between the experimental group and control group was verified with an $x^2$-test, t-test and paired and unpaired t-test. Results: The score of physical symptoms for the experimental group was lower than that of the control group. The score of physical strength for the experimental group was higher than that of the control group. Conclusion: Dan Jeon Breathing can be a physical health promotion for middle aged women. In terms of nursing practice, Dan Jeon Breathing can be utilized as a nursing intervention for physical well-being of middle aged women.