The invention discloses a hydraulic vibration impact robot. The crawler comprises a crawler chassis driven by hydraulic pressure, Rotary device, Rack and power system, Arm support system, Hydraulic system and cooling system, wherein a connector of the slewing device is arranged on the crawler chassis, auxiliary supports are arranged at four corners of the crawler chassis respectively, the slewingdevice comprises a slewing bearing and a slewing driving assembly, the upper part of the slewing bearing is fixed with the rack, the lower part of the slewing bearing is fixed with the crawler chassis, and the arm support system comprises three arms and driving oil cylinders thereof which are connected in series; Therefore, through the reasonable three-stage arm support structure design and the auxiliary supporting device, supporting of the crawler chassis is more stable and firmer, and the purposes of being large in range, high in stability and high in working power are achieved.