Researching the effect of breathing exercises on endurance and strength in volleyball players is important because it provides a deeper understanding of the relationship between breathing and athletic performance. Determining the effect of breathing exercises on players and providing valuable guidance to coaches and players on how to improve their performance and endurance is an urgent need. Moreover, this research may contribute to the massive development of effective training programs that are important in improving athletic performance and enhancing strength in volleyball plans, given the importance of these training strategies in enhancing the overall fitness level of athletes. After reviewing the sources and research, the researcher found that most training exercises do not emphasize breathing exercises, which play a major role in increasing the oxygen sources needed by the muscles to produce energy and rebuild their source necessary for continued contraction and muscle work. The researcher used the experimental method with a single-group design. The research sample included 16 players out of 18 players from the University of Diyala volleyball team, as one player was excluded after conducting the exploratory experiment on them. Pre-tests were conducted for the sample on the variables under study, and after applying the breathing exercises, post-tests were conducted. After collecting the data, the results were extracted and the most important conclusions were reached, which are Respiratory exercises play a role in improving the function of the respiratory system and thus enhancing physical and athletic performance in general.