The first manual excavator has been available for more than 130 years of history, period experienced a steam-driven Rotary excavator to electric and internal combustion engine-driven Rotary excavator, mechanical-electrical-hydraulic integration technology of automatic hydraulic excavator development process. First hydraulic excavators from Japan invention a success. Application of hydraulic technology in the 1940 of the 20th century on a tractor equipped with hydraulic backhoe hoisting excavator, in the early 1950 of the 20th century and the medium-term have developed a towed Rotary hydraulic excavators and crawler hydraulic excavators. Initial prototype of hydraulic excavator is the use of aircraft and machine tool hydraulic pressure technology, applicable to various operating conditions of the hydraulic excavator is missing components, manufacturing quality is not stable, a kit is not complete. In the 1960 of the 20th century, the hydraulic excavators into the promotion and development stages, States excavator plant and grow quickly, production has soared. 1968-1970, 83% of total production accounted for excavators hydraulic excavator has been closer to 100%.