Background: Emotion regulation appears to provide individuals with a doubled ability to avoid drug relapse and assists with the control of temptation to reuse, which is a type of tendency-avoidance conflict. The present study aims to investigate the effect of Gross model-based emotion regulation training on the reduction of craving beliefs in drug-addicted people.Methods: The present study was a quasi-experimental design. This was a pre- and post-test design that consisted of control and experimental groups. The study population comprised all addicted individuals who visited addiction treatment clinics in Marivan, Iran. About 30 drug-addicted individuals by the random selection method were chosen. Participants were randomly assigned to either the experimental or control groups. Results were analyzed by univariate covariance analysis.Findings: Gross model-based emotion regulation training reduced signs and beliefs associated with temptation in drug-addicted people (P < 0.001).Conclusion: Considering the present study’s findings, we recommend that addiction treatment centers teach strategies of emotion regulation to drug-addicted people by establishing workshops with the intent to reduce temptation signs.