The present study was carried out aimed to investigate the role of self efficacy and social tendencies in green purchase intention and behavior. This study is considered as an applied research in terms of purpose and descriptive-survey research in terms of data collection method. In this study, the statistical population includes all consumers of organic products supplied at Ofogh Koorosh chain stores (OKCS), including Talavang eggs and organic disposable tableware. Therefore, 384 questionnaires were collected. These questionnaires were distributed by stratified probability sampling method. Cronbach's alpha coefficient was used in order to evaluate the reliability of the questionnaire and confirmatory factor analysis technique was used to evaluate the validity of the questionnaire. Then, using structural equation modeling using Lisrel software was used to analyze data. According to the results of investigating the research hypotheses, social tendencies, self-efficacy and consumer attitude play a role in green purchase intention, and the role of environmental knowledge in consumer attitudes has been shown. And, finally, green purchase intention has played a role in green purchase behavior. Therefore, environmental knowledge has a significant effect on green purchase behavior through consumer attitudes and purchase intention.
