Construction machinery is an important part of equipment industry. To sum up, all mechanical equipment necessary for comprehensive mechanized construction works required for earthwork construction, pavement construction and maintenance, mobile crane loading and unloading operations and various construction projects are called engineering machinery.
It is mainly used in national defense construction projects, transportation construction, energy industry construction and production, mining and other raw material industry construction and production, agriculture, forestry and water conservancy construction, industrial and civil buildings, urban construction, environmental protection and other fields.

In the world, the appellation of this industry is basically the same. The United States and the United Kingdom are called construction machinery and equipment, Germany is called construction machinery and devices, Russia is called construction and road building machinery, and Japan is called construction machinery. In China, some products are also known as construction machinery, while mechanical systems are collectively referred to as construction machinery when they are established according to the approval document of the State Council. Countries have roughly the same product range for this industry. Compared with other countries, China's construction machinery has also added railway line construction machinery, forklifts and industrial handling vehicles, decoration machinery, elevators, pneumatic tools and other industries