Basic research has important strategic significance and is valued by major countries in the world. Taking the strategies, plans, scientific and technological reports, deployed projects and important research progress of quantum information science released by the United States in recent 20 years as the research object, this paper studies the deployment of basic research of Quantum Information Science in the United States from the national and institutional andlevels, and analyzes the effectiveness of policy deployment based on the articles published in nature and science. Countries and institutions always put basic research as the focus of R&D investment. Both countries and institutions emphasize integration. Integration at the national level emphasizes the coordination among various stakeholders such as universities, industries and federal agencies. Integration at the institutional level focuses on multi-disciplinary integration, collaborative funding between different funding departments, and taking into account basic research and the transformation of scientific and technological achievements. The United States has established a relatively perfect management system of quantum information science. The important progress of Quantum Information Science in the United States reflects the characteristics of overcoming higher-level challenges and deriving new research directions, and the positive role of policy deployment in expanding the scale and depth of research. Through the above analysis, combined with the current situation of China's development in the field of quantum information science, this paper puts forward some advantageous and key fields that need to focus on development in China, which can provide reference for the preparation of the implementation scheme of major quantum information science projects and the construction of national laboratories in China.