All hydraulic unitization live well workover rigs is widely used in oil and gas field to servicing under no kill fluid killing well and no opening flow for flowing well, Water injection well, gas well. It has changed tradition-servicing process, make the workover rig with snubbing servicing wellhead device unitization, so the servicing operation will be simple, the draw trailer and hoist equipment will be decrease. Because of kill well, It will be favorable for improvement oil field operating environment, protecting land, hold the layer producing energy balance, make high of recovery, reduce the pollution of layer and surface.