Investigation and research are the heirloom of our party and the fundamental skill for doing various work well. In the process of drafting the report of the 20th National Congress of the Communist Party of China, in accordance with the unified deployment of the Party Central Committee, 54 units undertook key research tasks and formed 80 research reports totaling 1.327 million words around 26 topics. The drafting process of the report of the 20th National Congress of the Communist Party of China has truly become a process of adhering to the mass line, fully promoting democracy, and concentrating the wisdom of the whole party and the people of the country. It has also become a process of in-depth investigation, research, and summarizing practical experience, as well as a process of fully liberating the mind and widely consolidating consensus. Practice is the source of theory. Strengthening theoretical armament requires adhering to the integration of theory with practice. Daxing investigation and research is an effective way to transform work style, closely connect with the masses, improve performance skills, and strengthen responsibility. To clarify the thoughts and ideas of the masses through investigation and research, and to obtain correct understanding through the creative practice of the people, so as to concentrate the wisdom of the people and reflect public opinion in various decisions and work arrangements, and win the support and support of the people. On the new journey, we must make good use of the legacy of investigation and research, master the basic skill of investigation and research, in order to deepen investigation and research, promote the resolution of development problems, and promote high-quality development. Adhere to a problem oriented approach. The goal is the direction of action, and the problem is the breakthrough point of work. We need to have clear goals in our work and achieve them by solving practical problems. The Work Plan for Investigation and Research on the Revitalization of the Whole Party issued by the General Office of the Communist Party of China clearly requires that "we must adhere to problem orientation, enhance problem awareness, dare to face problems, be good at discovering problems, and take solving problems as the fundamental goal". It also outlines 12 key problems, specific problems, and difficult problems, laying a focus for the whole party to carry out investigation and research. Research and investigation are like having a baby in October, and decision-making is like having a baby in one day. One important function of investigation and research is to serve scientific decision-making, therefore it is necessary to adhere to a problem oriented approach, carry the problem forward, and master the initiative of investigation and research. Through investigation and research, identify the problems and identify the breakthrough points to solve them, so as to make the policies formulated more in line with objective reality and the needs of the people. After policy implementation, it is necessary to track and provide feedback, and promptly adjust and improve any problems found. Emphasize research and analysis. Survey and research package