At first, the excavator was manual. It had been over one hundred and thirty years since the invention to 2013. During the period, it experienced the gradual development of the automatic hydraulic excavator from the steam drive excavator to the electric drive and the internal combustion engine driving rotary excavator and the mechanical and electrical integration technology. The first hydraulic excavator was invented by the French crane factory. Due to the application of hydraulic technology, a hydraulic backhoe mounted excavator was installed on tractors in 1940s. In 1951, the first full hydraulic backhoe excavator was launched in Poclain, France, to create new space in the field of technology development.