The research aims to identify the Psychological Steadfastness and its relationship with The Competition Anxiety and Motivation of the Sports Achievement For Volleyball players seating, The researcher used the descriptive approach, and the research community was represented in the volleyball players seating for the sports season (2017/2018), and the research sample was chosen by deliberate method Volleyball players seating from the players of clubs participating in the combined championship of the Premier League and the promotion of the excellent volleyball men's seating with a total of (96) players and set up in the hall covered in the Olympic Village, Mansoura University, and tools Data collection (Psychological Steadfastness Scale)- Prepared by the Researcher, (List of Competition Anxiety Case) Designed by Rainer Martins, et al. (1990), Prepared by the Arabic Image Allawi, M. (1998) and (Motivation of the Sports Achievement Scale), Prepared by AbuSaif. H. (2018). The most important results: There is acorrelation between psychological Steadfastness and the Motivation of the Sports Achievement for volleyball players seating and a correlation between
psychological Steadfastness and Motivation of the Sports Achievement for volleyball players seating.