The construction machinery-front loader and back hoe is a new multi-function engineering machine which gathering the loading and excavating in the integral whole machine. Having adopted four wheel drive,hydraulic torque converter,hydraulic streering system,hydrulic.It is extensively used in the roadmaintenance, farml and developments, getting clay for making brickiln, piping builds, the cable builds,park virescence and the excavating of the road opens to dig,broking upetc. Humanization designs;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 cencer,it make wheels has well clinging, so the machine has good span and cross capability, optimized load work.