The purpose of this study was to analyze brain waves before and after the plant cutting procedure in 34 adult subjects. After plant cutting procedure, RT(Relative power of theta) decreased and RB(Relative power of beta), RMB(Relative power of mid beta), RHB(Relative power of high beta), RST(Ratio of SMR to theta spectrum), RMT(Ratio of mid beta to theta), and RSMT(Ratio of SMR~mid beta to theta) increased, while RA(Relative power of alpha), RLB(Relative power of low beta), and RG(Relative power of gamma) did not change significantly. The decrease in the RT indicator means that the cutting did not cause anxiety as a stable work rather than a high level task. Therefore, it is considered that the cutting activity can be applied to the subjects with low cognitive level such as children, dementia, and intellectual disabilities and those who should avoid the psychological burden due to the performance of the work. The increases in RB, RMB, and RHB indicators mean a state of mental awakening, inducing concentration similar to meditation. Therefore, the activity of cutting can be applied to people who use psychological energy in daily life, psychological confusion, excessive unnecessary thought, troublesome problems. The increases in the RST, RMT, and RSMT indicators mean an increase in concentration. Therefore, it is possible to apply the cutting activity for the purpose of strengthening the attention and intensifying induction. The results of this study are meaningful that it was confirmed that the cutting activity could induce the brain to be awakened by inducing concentration through conscious activities without giving an intellectual anxiety or psychological burden.