Purpose: The aim of this study was to review systemically clinical trials on the trends of studies for Complementary Alternative Medicine in the treatment of dysmenorrhea. Methods: Through medical websites, foreign clinical literatures about complementary and alternative medicines of dysmenorrhea were searched. And domestic clinical literatures about dysmenorrhea, complementary and alternative treatment and oriental medicine treatment were searched using internet websites or hand-searching in National digital library, National assembly library, KISS, RISS. And then they were assessed by the assessment standard of Jadad scale and Classifying Recommendations. Results: 1. 15 foreign literatures and 36 domestic literatures were selected. 2. 4 foreign and 4 domestic clinical literatures were enough to satisfy over 2 points in Jadad score and recommendation level in Classifying Recommendations. 3. Some clinical trials were rated low in Jadad score since it was not easy to set control groups and keep blinding in clinical trials. 4. Some clinical trials were rated low in Classifying Recommendations since they did not carry out enough study about stability, side effect and follow-ups. Conclusion: To put clinical trials to practical use of Complementary Alternative Medicine in the treatment of dysmenorrhea, scientific and objective-based studies should be needed.