The research aims to try to identify the most important correlations between some biomechanical indicators and the contribution ratios and the digital level of long jump players in the flight and landing stages and to identify some biomechanical indicators of long jump players in the flight and landing stages and to reach predictive statistical mathematical equations through which the digital level can be predicted to select long jump players in the flight and landing stages. The researcher wonders: Is there a correlation between some biomechanical indicators and the digital level of long jump players in the flight and landing phases? Are there statistically significant differences in some biomechanical indicators of long jump players in the flight and landing phases? Is it possible to reach predictive statistical mathematical equations through which the digital level can be predicted to select long jump players in the flight and landing phases? The researcher used the descriptive approach, using high-speed video imaging and three-dimensional analysis. The research community consists of 20 long jump players from the Egyptian national team registered with the Egyptian Athletics Federation. The research sample was chosen intentionally from the Al-Ahly club players registered with the Egyptian Athletics Federation, and they are (5) players from the national team players. Each player made (3) attempts, and the best attempts were chosen according to the digital level. The total number of attempts was 9 attempts, which were subjected to statistical processing. The researcher concluded that there is a direct relationship between the transverse displacement of each of (left foot - center of gravity of left leg - center of gravity of left thigh - center of gravity of left forearm - center of gravity of right thigh) and the digital level at the moment of maximum height, i.e. the more it increases, the more the digital level increases. There is also a direct relationship between the angular acceleration of each of (left wrist - right shoulder - right trunk angle - right wrist - right knee angle) and the digital level at the moment of maximum height, i.e. the more it increases, the more the digital level increases. There is also a direct relationship between the transverse displacement of each of (left foot center of gravity - right palm center of gravity - right foot center of gravity) and the horizontal displacement (of head center of gravity - left foot center of gravity) and the digital level at the moment of landing, i.e. the more it increases, the more the digital level increases. There is also a direct relationship between the angular velocity of right wrist - left trunk angular acceleration - left foot wheel The angle of the right ankle - the angle of the left knee - between the digital level at the moment of landing, i.e. the higher it is, the higher the digital level. The variables can also be relied upon as an indicator of the players’ performance in the flying and landing phase of the long jump, considering that the sample members represent the best players numerically in the long jump in Egypt