Abstarct: The purpose of this study was to investigate the effect of sport curiosity and quality of communication on the consumption behavior of fans of Mashhad team.The present study is a descxriptive and cross-sectional study.The statistical population of this study is consisted of the supporters of the phenomenon of Khodro city of Mashhad, whose number is unknown. The available sampling method was used to select the sample. According to Klein (2011), 260 questionnaires were distributed among the 200 to 300 individuals for structural equations. To collect data from the Trail and Kim (2011) communication quality questionnaires, consumer behaviors, the combination of the Foroughi et al. (2016) questionnaires, Kim et al. (2011) and the congregation (2015) and sport curiosity questionnaires, Park, Mahoney, and Van Fondom (2002) were used. To determine the face and content validity of the questionnaires, the opinions of 10 experts and sports management professors were used. Confirmatory factor analysis was used to determine the construct validity of the questionnaires. Then, in order to check the reliability, the questionnaires were distributed in a pilot study among 30 supporters of Mashhad's team. Cronbach's alpha coefficient of reliability for consuming behaviors, communication quality and sport curiosity questionnaires were 0.85, 0.91 and 0.90, respectively, indicating appropriate reliability. Pearson correlation and path analysis were used to test the hypothesesThe results of inferential data analysis showed that sport curiosity had a positive and significant effect on the quality of supporters' relationship with the team (0.43); Also, the effect of sport curiosity on the consumption behavior of positive but non-significant fans (0.06); On the other hand, the quality of communication has a positive and significant effect on fans' consumption behaviors (0.89); Finally, baxsed on the results of the research model and the Sobel test results that were greater than 1.96, the quality of communication was confirmed as the mediating variable.