BJ-SH.SJZ-WH High-speed Railway project, with a total length of 1318 km, is the longest high-speed railway built at one time in the world. Facing the major scientific problem of continuous high-speed operation of long-distance high-speed railway in the world, its arduousness, complexity and particularity are unprecedented. After nearly 20 years of scientific and technological research and independent innovation, all scientific researchers and builders have established the technical standard system of the People's Republic of China for high-speed railway with a speed of 350 km per hour, built a high-level, stable and reliable infrastructure, greatly improved the level of major technical equipment, constructed advanced construction management and safe operation guarantee technology, and formed the technical standard of independent intellectual property rights, which has made remarkable achievements.