The whole-nation system of sci-tech innovation, which is derived from the whole-nation system of sports, is an important facet of the socialist whole-nation system. The whole- nation system of technological innovation is an integral part of the China model. It is characterized by the China-style big science. With the help of the whole-nation system, China has realized the leap-forward development of science and technology. Such system has a series of institutional advantages. Under the whole-nation system, we "concentrate our forces on major tasks" to achieve high efficiency, develop a spirit of "strong social cohesion, lofty spiritual driving force, strong sense of national identity", establish a scientific decision-making system. However, this system also has its limitations, such as putting too much emphasis on the role of government. The discussion about the institutional advantages of China's sci-tech development is conducive to understanding, building and deepening the development of socialism with Chinese characteristics.