Mentha spicata, Ocimum basilium L., and Rosemarinus officinalis L. were selected as subjects for the study, and analysis of rosmarinic acid contents by HPLC analysis and the fragrance components of each herb were compared by GC-MS analysis. It was prepared and cultivated in a herb farm located in Sacheonjin-ri, Gangneung-si in 2022 (Fig. 1) before flowering, collected in the summer, stored at minus 20℃, and dried 50 g each. The analysis was requested to the NICEM analysis room of Seoul National University to obtain the test results. Through the above study, HPLC showed that the content of rosmarinic acid was 555.53 mg/Kg, which was absolute, 27.12% in rosemary for 1,8-cineol in GC-MS, and 32.44% in linalool in sweet basil. For eugenol, 23.11% in sweet basil and 19.92% in rosemary were found in α-pinene. Through this study, it was verified that spearmint, sweet basil, and rosemary contain a large amount of major ingredients that act on concentration or brain activation.