Abstract Introduction: The route to satisfaction, peace and prosperity of mankind, there are several obstacles. Some of these barriers are the result of ignorance and self. One of the main obstacles to human health and performance of the current generation of highly endangered is Drug addiction. The present study examined the effects of cognitive - behavioral therapy in reducing student drug addiction relapse And increase their motivation for treatment are referred to health centers of Yazd. Methods: The type of research design was semi-experimental pre-test and post-test by control group. in the beginning 30 people of them was randomly assigned and this people including those who were their morphin test were positive. Then all subjects were randomly divided to three groups: experimental group and control group and the placebo group. Three experimental, control and placebo groups during and after the implementation of the independent variables regularly and predicted were morphine tested. after treatment intervention members of three groups again responded to Hermence achievement motivation test. For data analysis, one way ANOVA and Scheffe's test were used. Results: Results showed that cognitive - behavioral therapy, was effective in reducing the recurrence rate of drug addicted students. Conclusion: With regard to the effective use of effective, cognitive - behavioral therapy in reducing drug relapse and increase the motivation of individuals, Education program aimed at reducing drug relapse and increase the incentive for progress must be made. Keywords: Cognitive – Behavioral Therapy, addiction, achievement motivation.