Today (April 24) is China's space day and the 52nd anniversary of the successful launch of China's first man-made earth satellite "dongfanghong-1". On April 24, 1970, China's first man-made satellite "Dongfanghong 1" was successfully launched. A song "Dongfanghong" resounded all over the world, announcing that China has entered the space age. In recent years, with the increasing number of satellites and spacecraft with different functions, the generated space debris puts forward higher requirements for the orbit planning and operation of subsequent launch missions. Therefore, in order to make better use of space, China will build a perfect asteroid monitoring and early warning system to ensure the safe, stable and orderly operation of spacecraft in space. Wu Yanhua, deputy director of the National Space Administration, said in an exclusive interview with CCTV reporters that China will start to establish a near Earth Asteroid defense system to jointly deal with the threat of near earth asteroid impact and contribute to the protection of the earth and human security. Wu Yanhua, deputy director of the National Space Administration: we should start to improve and establish a ground-based space-based monitoring and early warning system for asteroids. In this way, we should catalog, and the key is to analyze which ones are seriously dangerous, and judge them. Second, we should study and explore relevant technologies and projects. Whether it is possible to eliminate these threats, we should carry out relevant technical research and tackling key problems. At the same time, China will also set about establishing the near Earth Asteroid defense system, organize the preparation of the near Earth Asteroid defense development plan, develop the near earth small object defense simulation software, and organize the basic process deduction. Wu Yanhua, deputy director of the National Space Administration: we strive to carry out a close observation and nearby impact on a threatening asteroid at the end of the 14th five year plan or in 2025 and 2026, and carry out technical experiments to change its orbit, so as to truly deal with the threat of asteroids and extraterrestrial objects to the earth's home in the future and make new contributions to China. (outlook new era)