The WZ30-25 is a new multi-function engineering machine which gathering the loading and excavating in the integral whole machine. It is the new generation model of the development based on the same kind product technique in domestic and international. Having adopted four wheel drive, hydraulic torque converter, hydraulic steering system. It is extensively used in the road maintenance, farm and developments, getting clay for making bricks, piping builds, park virescence and the excavating of the road opens to dig, broking up etc. This machine has below characteristics: The Yuchai engine, low noise, low exhaust gas, low waste, green environmental protection, driving motive, good reliability. The spirit valve control take type brake system and parking brake system move two units as one. When there is trouble in the gas brake system, it can make in time brake automatically, so it is more safety; Humanization design: the hand handle layout reasonable, manipulating is portable; steer device, gauge dish and the chair all can be adjusted in up-down and front-back directions according to your sense, so it is comfortable. The back wheel bridge can swing up and down round the censor, it makes wheels have well clinging, so the machine has good span and cross capability, optimized load work device: reasonable joint layout, dependable position limit function, leveling bucket automatically in upload position, lacenning labor intensity, and the work range is larger, workforce is more sturdy and steady, the work efficiency is higher, special middle placed backhoe and wing-spread support leg. When the machine breaks up stones and do deeper dig work. It has stronger stability than other kind backhoe, of the craft brother the machine take the lead in using hydraulic scale forerunner valve control, manipulating is portable and orientation is exact. It may do multiple motions, work efficiency is high, plush and unitary cab is designed according to person-machine’s principle. Widen view, sealed and quiver damped, air-condition is choice, comfortable and safety operation environment. Ten various machine tools may be choiced to use. Eg: hydraulic break up hammer, quiver rammer, four units as one bucket, tongs etc. The function is more comprehensive.