Abstarct: The overall objective of this study was to examine the The role of the coach-athlete interaction on team effectiveness and satisfaction of athletesin Razavi khorasan Provinc The research method was a descxriptive and correlational study. The population of the study was all male and female plaxyers in volleyball, basketball, football and footsall playing in Razavy khorasan gyms. According to the target population proportion in different fields, the sample was obtained from Morgan table. For this purpose, 344 questionnaires of individual characteristics,Collective efficacy (Feltz and Lyri, 1998, short et al, 2005) and athlete satisfaction (Riemer & Chelladuri, 1998) were completed، Finally, 321 questionnaires were analyzed Their face and content validity was confirmed by experts and their reliability. Using Cranach’s alpha, was assessed 0/89 and 0/97 and 0/88, respectively. For data analysis in this study, the descxriptive and inferential statistics were used in a significant level (P ). In descxriptive statistics the average, frequency tables and standard deviation were used and in inferential statistics the Skewness and kurtosis test for verifying data distribution (normal or abnormal), Correlation test,Uman vitny. One way ANOVA; Turkey's test and regression coefficients were used to answer the research hypotheses. The SPSS version 19 was used for statistical analysis. . The results showed that the interaction between the coach - athlete and athlete satisfaction as well as satisfaction with the effectiveness of team sports there is a significant positive relationship. Moreover, the interaction between the coach - athlete and team effectiveness and a significant positive correlation. According to the results of correlation between demographic characteristics of subjects with variable age interaction coach - athlete, team effectiveness and satisfaction of the plaxyers association was not significant. The results showed that the satisfaction of Khorasan Razavi province baxsed sports team sports there is a significant difference. These results focus on considering the satisfaction of athletes in training programs of trainers.