The purpose of this study is to systematically analyze the effect of Tai Chi as therapeutic exercise on depressing blood pressure. Methods: We reviewed articles published in the PubMed, Chinese Academic Journals (CAJ) and five Korean databases. The searching keywords were ''Tai chi AND blood pressure'' and ''Tai chi AND hypertension''. We evaluated the quality with Cochrane risk of bias tool. Results: In the 114 articles searched, 7 randomized controlled clinical trials were selected. Yang ( ) style Tai chi, exercising over 30 minutes a time and over three times a week, had an effect on decreasing blood pressure. However, Wu ( ) style Tai chi was not effective in decreasing blood pressure. Conclusion: Usual exercises for hypertension patients should be performed in the form of moderate exercises intensity for 10-26 weeks by 30-60 minute a time, over 3 times a week. The study of Tai Chi on blood pressure needs to follow this criteria in the future.