The real economy is a microeconomic concept. In a broad sense, it refers to the economy of specific industries such as limited companies, limited liability companies, joint ventures and wholly-owned companies, as well as self-operated stalls such as small shops and restaurants and rural household operations, as well as large and medium-sized ethnic enterprises: commercial banks, railways, aviation, electric power, hydrothermal enterprises and military enterprises. In a narrow sense, it only refers to the enterprises and individual economies engaged in the primary and secondary industries in the above-mentioned economies, as well as the enterprise economies in the construction, transportation, wholesale, retail, catering services, public services and other industries in the tertiary industry. In practical application, generalized concept is the main concept. Fictitious economy is a macro-economic concept, such as: the economy with index as the target includes stock market, futures and so on. Because it is a relative index based on the index, the rise and fall of the index affects the growth or decline of the economic aggregate, and the index is relative, so it is classified as a virtual economy. Economies based on differences are: foreign exchange reserves, currency, etc. Because it is based on exchange rate and interest rate, it is a qualitative relative indicator, and its total amount also changes with the change of two interest rates, so it is also classified as virtual economy. Generally, it mainly refers to the above two categories. In addition, there are economic divisions affected by the price index, and it is still difficult to give an accurate classification. The relationship between the two: the real economy is the foundation and premise of the development of virtual economy. Without the real economy, there would be no virtual economy; Virtual economy is the guarantee of the development of real economy and an important source of funds for real economy.