The staff subsystem is composed of experts and scholars who master all kinds of knowledge, and it is also an auxiliary institution of the decision-making subsystem. The staff subsystem concentrates the collective wisdom of the staff consultants, and uses modern decision-making techniques and methods to provide decision-making schemes and other consulting services for the decision-making subsystem to ensure the scientific and democratic decision-making of the public. Staff subsystem has four organizational forms: official, semi-official, non-governmental and transnational. No matter what kind of employee subsystem, it has the characteristics of collectivity, scientificity and relative independence. Collectivity is due to the complexity of social problems, many uncertain factors and great dynamic changes, and it is necessary to use multidisciplinary knowledge to solve problems, which can be satisfied by many expert groups with different knowledge; Scientificality means that consultants should use advanced scientific and technological means and scientific analysis techniques and methods to provide services for decision makers, and relying solely on experience and strategies can not meet the needs of social development; Relative independence means that staff officers must study and analyze problems relatively independently and put forward their opinions fairly. The analysis and conclusion of the problem must be based on objective facts and cannot be influenced by decision makers.
The function or function of the administrative decision-making system and its staff subsystem in operation is: (1) to assist the decision-making subsystem to define policy issues and establish policy objectives. Decision-making and prediction are inseparable. Staff officers provide scientific judgment through investigation and research, as well as advanced research and prediction of future development trends, and provide reference for decision makers to define policy issues and establish policy objectives. (2) Provide solutions, approaches and methods for decision-making subsystem. When choosing the best policy scheme, it needs to go through a series of qualitative and quantitative analysis and demonstration to provide a preliminary scheme for decision makers, and also provide the evaluation opinions of the system and other consulting institutions on this scheme, so that decision makers can brainstorm and choose a satisfactory scheme from many schemes. (3) Tracking and feeding back the implementation of public policies. Collect and analyze problems in policy implementation, especially when encountering obstacles or deviating from policy objectives in the process of policy implementation, and put forward emergency measures in time so that decision makers and executors can correct them in time and ensure the smooth implementation of public policies.