Abstract: Basic research is the source of scientific and technological innovation. This paper focuses on the development trend of the frontiers of basic research in the interdisciplinary field, and analyzes the relevant strategies and plans of major countries in 2020 from the fields of mathematics and its interdisciplinary, physics and its interdisciplinary, chemistry and its interdisciplinary, and nanotechnology. In maths and its cross fields, this study focuses on the connection between mathematics and computer science; In physics and its cross fields, this study focuses on condensed matter physics, atomic and molecular physics and optical physics, particle physics and nuclear physics, and astrophysics; in Chemistry and its intersection, this study focuses on synthetic chemistry, quantum chemistry, chemical biology and energy chemistry; in Nanotechnology this study focuses on the characterization and preparation of carbon nanotubes, the synthesis of nanostructures, nano metal materials and nano devices. The results show that the United States, the European Union, the United Kingdom, Japan and China have increased investment in basic research. The United States and the United Kingdom strengthen the transformation of basic research achievements through the reform of basic research funding institutions. In 2020, quantum information science and artificial intelligence are still the focus of attention of all countries. In addition, the United States attaches great importance to semiconductor, nuclear fusion and plasma science. The European Union continues to adjust its particle physics program. The United Kingdom invests heavily in mathematics and physics talents at home and abroad. The trend of interdisciplinary integration continues to be maintained within and between disciplines. Computational science is the common interdisciplinary field of the four fields discussed in this paper. The foundation of discipline development, international cooperation and the interaction of multiple elements of large scientific devices jointly promote the development of macro and micro physics. In the development of chemistry and nanotechnology, it is necessary to extract common basic research problems. As for the shortages of extensive discussion on the development of basic research of quantum information technology and artificial intelligence, and the research frontier proposed by the international and domestic researchers, the decisionmakers need to clarify the order of shortcomings as well as deploy the basic research frontiers suitable for China’s conditions with a wide range of stakeholders.

Key words: Frontiers of Basic Research in the Interdisciplinary Field, Strategic Planning, Development Situation, Future Trends