The purpose of the present study was designing a comprehensive model of sports achievement based on psychological preparation factors related to sports performance and team cohesion .The research method was descriptive-correlation which was carried out by field method. The statistical population of this research included all football and volleyball players participating in the national student championships (N=142). In this research Test of Performance Strategic of Thomas (1999) and Karen's team cohesion questionnaire (2018) were used to measure group cohesion and success. The data were analyzed using version 23 of SPSS and Lisrel software (P≥0.05). The results of the coefficients of the path analysis of the research model of the coefficients showed that the seven indicators of psychological preparation have a significant effect on the final variable of sports achievement of athletes, but among all the variables, the variables of emotion control, Automatcity and goal selection had the highest path coefficient. Also, the variable of team cohesion had a direct and significant path coefficient on the structure of athletes' sports success. Based on the findings of the present research, which showed the role and effect of mental skill subscales in strengthening and maintaining team cohesion and ultimately the success of athletes, it is suggested to the coaching staff of student teams that while familiarizing young athletes with development techniques Include mental preparation through controlling emotions and negative thoughts, new methods of sports imaging and improving team cohesion in training sessions.