文章首先介绍钱学森先生关于技术科学的论述，重点从信息科学的发展，讨论了近代技术科学发展的特点，在这个基础上, 从应用价值、文化价值和精神价值等方面，进一步探讨了技术科学的社会价值。

At first, Qian Xuesen´s treatises about technological science are presented in this paper. Technological science emphasizes particularly opening out the mechanism of the phenomenon, levels and relations and abstracting the principles, laws and methods applied at large in the field of engineering technology. Technological science drives the rapid progress of the engineering technology, as a bridge between the scientific discovery and the industry development. The characteristics of the development of recent technological science from the development of the information science are emphasized. (1) The development of technological science has extended to researching the law in the field of information from researching the law in the fields of matter and energy. (2) The infiltrating to basic science from information science has formed the new hotspot in technological science. (3) Information science has greatly improved the research environment for the traditional technological science. (4) Information theory, control theory and operation research form together the lever of the technological science of system science. The social values of the technological science are farther discussed from the aspects of the applied value, cultural value and spirit value.