Objectives : This study is designed to find out the influence of acupuncture treatments on Iliopsoas muscles of disc herniated patients. Method : Control group took usual acupuncture therapies and sample group took acupuncture therapies on their Iliopsoas muscles and usual acupuncture therapies. To Conclude the results, we studied Numerical Rating Scale(NRS) score and changes of SLR-test angle statistically. Results : The improvement rate of the group who took Iliopsoas muscles and usual acupuncture therapies was higher than the group who only took usual acupuncture therapies. Conclusion : In this study, we found out that the treatment on Iliopsoas muscles is effective to low back pain patients.