Recently, the General Office of the Central Committee of the Communist Party of China (CPC) has issued the "Work Plan for Promoting Investigation and Research in the Whole Party", which sets out clear requirements for the key content, methods, and steps of investigation and research in the new era, new stage, and new journey, fully reflecting our Party's political and action consciousness in conducting investigation and research work. Investigation and research are the heirloom of our Party's leadership in various historical periods of revolution, construction, and reform, and are also an important ideological and working method of our Party. At the critical moment of comprehensively starting the new journey of building a modern socialist country and marching towards the second centennial goal, Daxing investigation and research has highlighted the distinctive political character of the CPC people and reflected the basic requirements of Marxist epistemology. Deeply grasping the epistemological significance of investigation and research has important theoretical and practical significance for deeply understanding the theoretical basis of investigation and research, and further improving the consciousness of Daxing investigation and research. Daxing investigation and research is the fundamental way to shift from subjectivism to seeking truth from facts. In philosophy, subjectivism manifests itself as dogmatism and empiricism, which are essentially metaphysical thinking methods that can make Marxism divorced from reality and bias the Party's guiding ideology. To accurately grasp objective reality and truly grasp objective laws; We should adhere to the system concept, grasp a series of relationships such as the overall and local, the current and long-term, the macro and micro, the main and secondary contradictions, and the special and general. We should use a developmental rather than static, systematic rather than one-sided, linked rather than isolated thinking method to accurately identify change, adapt scientifically, and actively seek change. Only by adhering to the investigation and research of materialistic dialectics can we reveal the inherent rather than imaginary laws inherent in reality, and can we follow this path towards correct action. Daxing investigation and research is a basic requirement for strongly abstaining from "wandering the horse and watching the flowers". Investigation and research itself is a scientific method "seen in practice". Leading cadres who take the lead in in-depth investigation and research at the grassroots level should constantly deepen their understanding and grasp of the Party's innovative theory, be adept at using the Party's innovative theory to study new situations, solve new problems, summarize new experiences, and explore new laws, so as to grasp objective laws in deeply excavating facts. The process of investigation and research is to unify investigation and research, unify collected materials and collated materials, and unify research and problem-solving. Research without research is like "a skillful woman cannot make a meal without rice", while research without research is like "a half cooked sandwich of rice". Therefore, the conclusion of the investigation and research should not be a list of the phenomena of A-E, P-D, or exaggerated and exaggerated articles, but rather penetrate the back of the phenomenal world and reveal things