Abstarct: Green Marketing is established on the goal of creating a healthy social environment. This kind of marketing contains a wide range of activities, such as product improvement and product correction, manufacturing process change, environmentally friendly packaging, as well as improvement of advertising practices, which in the end results rendering of a healthy and effective product to the community. The purpose of this research is the effect of green marketing on brand image and the willingness of customers to purchase Majid sports products. The statistical society of this study was formed all customers of Majid stores (Sport commodity) in the three selected cities: Tehran, Shiraz and Mashhad. 172 customers of these stores were selected as an example of research in the available manner. The data was collected from three Ulrich Brand image questionnaires (2009), a questionnaire for green marketing and a willingness to purchase Hwang and Kim (2013). The face and content validity, the questionnaires were verified by 10 experts and the convergent and divergent validity of the questionnaires was also verified. To ensure the reliability standard questionnaire three loads, was used of Cronbach's alpha coefficient chemical compound according to Fornell-Larker (1981). The reliability coefficient for the green marketing questionnaire 0.75, for the brand image 0.83 and for the willingness to purchase 0.83. The results showed that green marketing has a positive and significant effect on the brand image (β = 0.49) and the willingness to purchase customers (β = 0.36). Brand image also has a positive and significant effect on customers' willingness to purchase (β = 0.39). In view of the result of the Sobol test, brand image has an important mediator role in the relationship between green marketing and shopping. Finally, the fitting indices of the model represent the optimal fit of the model. Producers can improve their brand image by using green marketing to increase their willingness to purchase customers.