Modern mathematics can be divided into two categories: one is to study continuous objects, such as analysis and equations, and the other is to study combinatorial mathematics of discrete objects. Combinatorial mathematics not only plays an extremely important role in basic mathematics research, but also has important applications in other disciplines, such as computer science, coding and cryptography, physics, chemistry, biology and so on. The development of calculus and modern mathematics laid the foundation for the modern industrial revolution. The development of combinatorial mathematics is the foundation of computer revolution in this century. A computer can be called a computer because it is programmed, and the program is an algorithm. In most cases, computer algorithms are aimed at discrete objects, rather than numerical calculations. It is because of the combinatorial algorithm that people feel that computers seem to have thinking.

Combinatorial mathematics has important application value not only in software technology, but also in enterprise management, traffic planning, war command, financial analysis and other fields. In America, there is a company named after Combinatorial Mathematics. They use combinatorial mathematics to improve the efficiency of enterprise management. This company is very successful. In addition, experimental design is also a subject with great application value, and its mathematical principle is combinatorial mathematics. Combinatorial mathematics is used to solve the experimental design problems in industry, and a special company in the United States has developed software in this field.