Abstarct: The purpose of this study was to investigate the effect of sales promotion on the customers repurchase intention of sports stores with the mediation of alas after impulsive buying and purchasing. Due to the descxriptive-survey nature, the method of the present study was correlational and cross-sectional in terms of the relationship between the variables. The statistical population of the study was all customers of sports stores in Amol that 270 people were selected as a sample using the available sampling method. The research tools were 4 standard questionnaires of sales promotion, willingness to repurchase, impulsive purchase and post-purchase regret. To investigate the research hypotheses at the significance level (p≤0.05), structural equations with variance-baxsed approach were used. It should be noted that SPSS23 and Smart-PLS 3.2.8 software were used to analyze the data in the present study. The results showed that sales promotion had a positive and significant effect on the tendency to buy again and impulsive purchasing and a negative and significant effect on the aftermath. From the purchase customers of Amol sports stores. The results also showed that impulsive shopping had a positive and significant effect and regret after purchase on the desire to repurchase store customers. They have sports in Amol city. Also, promoting sales through regret after purchase has a significant effect on the tendency to buy again, but promoting sales through impulsive buying does not have a significant effect on the tendency to buy again. According to the results, the managers of sports stores can use sales promotion and reduction strategies after buying and impulsive purchase of products to increase the purchase intention of customers.