The purpose of this study was to investigate the effects of chiropractic, ultrasound, taping??method on active rotation ROM of SCM muscle. Thirty subjects were divided into three groups, group A for??chiropractic treatment, group B for ultrasound treatment, and group C for Taping treatment. Each group was treated??two times per week, for 4 weeks. The data were analyzed with SPSS WIN 10.0 using t-test one-way ANOVA, and??SNK. The results of this study were as follows: The hypothesis 1, depending on treatment method, active cervical??rotation ROM will have difference, was proved(p<0.001). The hypothesis 2, depending on age or sex, active??cervical rotation ROM will have no difference, was proved(p<0.001). Each treatment group had the same treatment effect??regardless of age. chiropractic and ltrasound treatment group had the same treatment effect regardless of sex,??while Taping treatment group had a better treatment effect in male group than in female group (p<0.001). The result of??this study presents that active cervical ROM has differences depending on chiropractic, ultrasound, or taping??method on SCM muscle. In conclusion, SCM can be treated more effectively considering patient age, sex, or treatment??environment.