Industrial economics is a discipline that studies and analyzes the production activities and economic organizations of various industries in a country or region. It focuses on industrial structure, industrial development and industrial competition. The research objects of industrial economics include production technology, market demand, competition and the influence of government policies on industry.

Quantitative economics is a branch of economics, which studies the quantitative relationship of economic phenomena. It uses mathematics, statistics and other tools to analyze and study the quantitative characteristics of economic phenomena. Quantitative economics focuses on the quantitative relationship between economic variables, such as the relationship between demand and supply, the relationship between price and quantity. The research methods of quantitative economy include regression analysis, hypothesis testing and time series analysis.

Therefore, industrial economics and quantitative economics are disciplines that study economic problems from different angles. Industrial economy focuses on production and competition at the industrial level, while quantitative economy focuses on the quantitative relationship between economic variables. They are different in research methods, research contents and research objects.