Development of human molecular genetics gradually revealed that certain people seem to have congenital capacity in physical performance, and this capacity may correlate with genes. Recently, more and more evidences have shown that genes control some physical characters, such as extreme motion, muscle strength, endurance, ductility, fatigue recovery, and VO2max, ect. The development of spaceflight in China and nation defence urgently require appearance of this study, and its application will help to find physically potential individuals in advance and save large amount of money in the later systematic training.