Qian Xuesen (191.12.11-) is a scientist in the fields of applied mechanics, aerospace technology and systems engineering. Born in Shanghai, ancestral home in Hangzhou, Zhejiang. 1934 graduated from Shanghai Jiaotong University. 1936 received a master's degree from MIT. 1938 received his doctorate from California Institute of Technology. 1955 returned to China. He used to be the chairman and honorary chairman of China theoretical and applied mechanics Society, China Automation Society, China Systems Engineering Society and China Aerospace Society. He is currently a researcher at the National Defense Science, Technology and Industry Committee. In his early years, he did pioneering work in many fields of applied mechanics and rocket and missile technology. Many theories put forward by independent research and cooperation with von Carmen have laid the foundation for the development of applied mechanics, aviation engineering and rocket and missile technology. After returning to China, he served as the technical director of rocket, missile and satellite development for a long time, and made outstanding contributions to the establishment and development of China's missile and space industry. Creative research has been made in many theoretical fields, such as engineering cybernetics, systems engineering and systems science, thinking science and humanities, Marxist philosophy and so on, and great contributions have been made. 1956 won the first prize of Natural Science Award of China Academy of Sciences; 1985 won the national special prize for scientific and technological progress; 199 1 was awarded the honorary title of "National Outstanding Contribution Scientist" and the first-class English Model Medal by the State Council and the Central Military Commission. Academician of China Academy of Sciences. 1994 was elected as an academician of China Academy of Engineering.