Building national strength in transportation plays an important role in supporting and leading the realization of Chinese-style modernization and building China into a great modern socialist country in all respects. Since the reform and opening-up,the development of China's transportation has experienced three stages: bottleneck restriction,overall mitigation,and basic adaptation,and enters the stage of leading development. The unbalanced and inadequate development of transportation can no longer meet the people's ever-growing needs for a better life. Facing the new era,the basic connotation of building national strength in transportation includes two dimensions: strengthening oneself and strengthening the country. It is required to take the spatial pattern and order of humanity-economic activities as the basic foundation,conform to the innovation of the space-time organization mode of human activities in the information age,and meet the people's demand for high-quality transportation through the application of new technologies and innovative service modes. In order to give full play to the fundamental,guiding,serving and strategic role of transportation in the national economic and social system in building a new development pattern,promoting high-quality development,supporting the building of a beautiful China,and safeguarding national security,it should promote the formation of a harmonious and orderly regional system of man-land relations,and give strong support to the implementation of major national strategies,the building of a modern economic system and the building of a great modern socialist country.