Macro-economy refers to the macro-level national economy, including a country's total national economy, national economic composition (mainly divided into GDP departments and non-GDP departments), industrial development stage and industrial structure, and economic development degree (human development index, social development index, social welfare index and happiness index). Microeconomics refers to individual economic activities, that is, the economic activities of a single economic unit. Refers to individual enterprises, institutions and their economic activities, such as the production, supply and sales of individual enterprises, individual exchange prices, etc. The operation of microeconomics is guided by price and market signals, and self-adjustment and balance are carried out through competition; However, there are many areas in the operation of macro-economy that cannot be achieved by the role of market mechanism, which requires the state to proceed from the overall interests of society and use various means to carry out macro-control.

The connection between the two.

Macro-economy and micro-economy are two different levels of economic activities and economic operations. Macroeconomics and microeconomics are closely related. Microeconomics is the foundation of macroeconomics, and the good condition of macroeconomics is the necessary condition for the smooth progress of microeconomic activities.

Socio-economic activities are a whole, and macro and micro, as well as production, circulation, distribution and exchange, are closely linked. In the process of the transformation from socialist planned economy to market economy, planning and market are two different means of economic adjustment. Under the condition of modern socialized commodity economy, only by rationally using the two economic means of allocating resources, namely planning and market, can we more effectively promote the proportional development of social production. Whether it is a plan or a market, the market is in a more basic position, and the plan is to play a macro-adjustment function and a micro-guidance function under the role of the market. Only by organically combining planning with market can China's economy develop continuously, rapidly and healthily. In the transition period from planned economy to market economy, the state especially needs to use macroeconomic legal means to regulate and control.