The primary industry mainly refers to industries that produce food raw materials and other biological raw materials, including planting, forestry, animal husbandry, aquaculture and other industries that directly target natural products.
The secondary industry mainly refers to the processing and manufacturing industry that uses the basic materials provided by nature and the primary industry for processing.
The tertiary industry refers to other industries other than the primary and secondary industries, with a wide range, mainly including intangible production departments such as transportation, communication, commerce, catering, finance, education and public services.
Extended data:
With the progress of social economy and science, the output value of various sectors of the national economy and the proportion of employed people are constantly changing.
Its changing trend is: firstly, the proportion of primary industry is declining, the proportion of secondary industry is rising, and the proportion of tertiary industry is also rising; Subsequently, the proportion of material production departments, including primary and secondary industries, declined to varying degrees, and the proportion of tertiary industry continued to rise.
This trend is more prominent in developed countries. Up to now, the proportion of output value and employed population of tertiary industry in developed countries is generally above 50%, which is the largest and fastest growing industry.
In developing countries, except newly industrialized countries and regions, the level of industrial structure is relatively backward and the transformation process is not fast. However, from the perspective of changing trends, developed countries and developing countries are basically the same.
References:
Baidu Encyclopedia-Three Industries