Smoking behavior in adolescents is a difficult behavior to change. In cigarettes there are addictive ingredients that make dependence on the wearer. The phenomenon obtained in Bendungan Village, there are 42 teenagers aged 15-19 years who have smoking behavior due to invitations from friends, curiosity, often seeing parents smoking and the desire of teenagers themselves. The Spiritual Emotional Freedom Technique (SEFT) method by tapping 2 fingers on 18 key points in the body's 12 energy pathways. The purpose of this study was to determine the effect of the SEFT therapy method on changes in smoking behavior in adolescents in Bendungan Village, Pabelan District, Semarang Regency. The research design used is a quantitative method using a pre-experimental type with a one group pretest-posttest design. The sampling technique used 30 respondents. The research instrument is a questionnaire that has been tested for validity in research (Anggraeni, 2019) with the title "Peer Peer Relationships with Smoking Behavior in Early Adolescents" the number of respondents in this assessment is 15 people with an r value of 0.518 provided that the value of r product moment > r table (0.514), then it is declared valid. The analytical method used is Paired Sample T-test. The results showed that smoking behavior before SEFT therapy was in the moderate category (86.7%) than after being given SEFT therapy in the good category (63.3%). The results of the analysis with the Paired Sample T-test test obtained p value = 0.000 means p value