1, Natural Science: Mathematics provides basic tools for natural science, such as physics, chemistry and biology. In these fields, mathematics is widely used in physical modeling, chemical reaction kinetics, biostatistics and so on.

2. Social sciences: Mathematics is also widely used in social sciences, such as economics, sociology and psychology. In these disciplines, mathematics provides basic tools such as data analysis methods, probability theory and statistics to help us better understand and explain social phenomena.

3. Engineering and technology: Mathematics plays a vital role in the field of engineering and technology. For example, in the fields of architecture, machinery, electric power and computer, mathematics is widely used in the process of design, manufacturing and optimization.