Public management is a multidisciplinary subject, and many social and natural science subject knowledge is of some significance and value to the research and development of its subject. Because public management is born in the soil of political science, and society is the main object of influence, it is proposed to choose the two major departments of political science and sociology and public management for comparative study. On the basis of accurately defining the concepts of public management, political science and sociology, this paper introduces the main research methods, perspectives and research methods of the three disciplines, and after discussing the differences and links between political science, sociology and public management, it is concluded that the construction of public management disciplines cannot be separated from the theoretical contributions of other disciplines, and that public management disciplines should learn more from the research methods of political science and sociology to improve the development of the disciplines themselves.

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