Objective: The present study aimed to determine the effectiveness of mindfulness-based group therapy on improving meta-cognitive beliefs in preventing the relapse of women consuming stimulants has been done. Method: The design of this study is experimental with pre-test and post-test with the control group was followed by the follow-up phase. The statistical population of this study included all women who consumed stimulants from eighteen to forty years referring to the Hamgam sazan Addiction treatment Center in Tehran Province in 1396 among which thirty individuals were selected by convenience sampling method. Availability sampling was selected and randomly assigned to the experimental and control groups of each 15 individuals. The 90-minute treatment session was trained by the mindfulness method. However, the control group received no training. (MCQ) in both pre-test and post-test stages were completed by both groups. Data were analyzed by covariance analysis and soft aided SPSS software was used for data analysis. After three months, both groups were followed up. Results: Results showed that there was a significant difference between the mean of metacognitive post-test scores in the experimental and control groups. Mindfulness training has improved metacognition in preventing relapse in women who use stimulants. Conclusion: The findings of this study in general indicate the effectiveness of mindfulness-based group therapy training on improving metacognitive beliefs in preventing the relapse of women consuming stimulants. Therefore, such sessions are recommended in drug addiction treatment centers and clinics.
