Personal interests are the main reason for the formation of interest groups. As early as the end of 18, interest groups such as the National Beer Manufacturers Association and the National Cotton Manufacturers Association appeared in the United States. Later, similar groups appeared in Britain, France and other western countries. In the early days, there were only a few interest groups with limited influence on society. /kloc-In the middle of the 0/9th century, the wave of industrialization swept the western countries, and industry, trade and occupation were rapidly divided in the process of industrialization, and various social contradictions further developed, and the government functions also expanded. Various laws and policies formulated by the government almost involve the interests of different groups in society, causing people's general concern about government behavior, and various interest groups have developed rapidly.

British Enterprise Interest Group Association, British Shipbuilding Association, American Manufacturers Association, American Chamber of Commerce, French Manufacturers Association, Japanese Economic Group, etc. , are formed in this period, they have a more general impact on real politics. In the 20th century, especially after the Second World War, with the development of social economy, politics and culture, the expansion of government's economic and social management functions, the progress of science and technology, and the further sharpening and complication of various social contradictions, interest groups rose in the West. According to the statistics of American Association Encyclopedia, there were 14726 non-profit organizations in China in 1980, and it increased to more than 40,000 in 1989.