Abstract: Sport is the symbol of national prosperity and social civilization progress. In the new era, the development of sports in China aims at accelerating the construction of sports power, where scientific and technological elements play an important role. This study mainly discusses the roadmap, main paths and guarantee measures of science and technology promoting competitive sports development in China. The roadmap of science and technology promoting competitive sports development is to take the goal and task, the driving force of science and technology, the reform and innovation as the leading role. The development paths mainly include establishing a diversified and integrated competitive sports training system, building a high-level, scientific and interdisciplinary training and service guarantee team, improving the expertise of the training team and scientific and technological personnel, building a platform for scientific and technological innovation of competitive sports, and improving the level of scientific and technological support for Winter Olympic sports. The main guarantee measures are strengthening the organization and leadership, improving the system and mechanism; increasing the investment in science and technology, broadening the investment channels; strengthening the personnel guarantee, improving the incentive mechanism; highlighting the advantageous sports,promoting the sustainable development.