Mao Yisheng (1896- 1989) is a Chinese bridge scientist and educator. Original name? Tang Chen was born in Zhenjiang, Jiangsu. 19 16 graduated from Tangshan institute of technology. 19 17 obtained a master's degree in civil engineering from Cornell University. 192 1 received a doctorate from Carnegie Institute of Technology in the United States with the thesis "Study on Secondary Stress of Bridge Structure". After returning to China, he served as professor, director, principal and dean of Jiaotong University, Southeast University and Tangshan College of Beiyang Institute of Technology, director of Qiantang River Bridge Engineering Department, general manager and chief engineer of China Bridge Corporation of Ministry of Communications. 1948 was elected as an academician of academia sinica. 1949, he served as president of China jiaotong university, director of railway research institute, chairman of technical advisory Committee of Wuhan Yangtze river bridge and director of railway research institute. 1955 was elected as an academician of China Academy of Sciences and deputy director of technical department. Mao Yisheng has been engaged in engineering practice, scientific research and education in the fields of bridge engineering, structural mechanics and soil mechanics for a long time, and has been elected as the director and president of China Institution of Engineers and china civil engineering society for many times. He advocated the scientific research and teaching of soil mechanics, and initiated the establishment of China Society of Soil Mechanics and Basic Engineering on 1948. Since 1950s, he has served as Chairman china civil engineering society, Vice Chairman of China Association for Science and Technology and Chairman of Beijing Association for Science and Technology. Mao Yisheng has published many papers such as Secondary Stress of Bridges and Earth Pressure of Retaining Walls. His works include: Qiantang River Bridge, Wuhan Yangtze River Bridge, China Old Bridge and New Bridge (translated into English, German, French, Japanese and Spanish), Collected Works of Mao Yisheng, Selected Works of Mao Yisheng, etc. He also edited the Technical History of Ancient Bridges in China. 192 1, Mao Yisheng won the Fotis Research Medal of Cornell University for his research on the secondary stress of bridge structures, and 1979 won the "Outstanding Alumni" Medal of Carnegie Mellon University for his contribution to civil engineering. 1982 was elected as a foreign academician of the national academy of engineering; 1984 Honorary member of Canadian Civil Engineering Association. 1949, member of the 1st to 6th Chinese People's Political Consultative Conference of Mao Yisheng, and the 6th vice-chairman. Since 1954, he has been elected as a deputy and member of the Standing Committee of the First to Sixth National People's Congress. 1959, deputy director of the Central Committee of the Jiu San Society.