The invention provides a multifunctional bionic crab-like robot which comprises a top module, a bottom plate module, a leg module, a right claw module, a left claw module and a binocular vision module; a set of multifunctional robot in bionic crab form can be formed by the combined design of the modules, and the robot is characterized in that the top module can complete jacking-up of a top weight at an adaptive angle and can perform sawing in circumferential direction; the leg module can be adapted to more landforms and can realize omnibearing walking; independence or matching of a right claw and a left claw can complete multiple tasks and meet the requirements of occasions having special requirements; the binocular vision module can independently or cooperatively complete omnibearing observation on the surroundings to guide the use and operation conditions of the robot; and since hydraulic pressure is adopted as power, the power is strong and the operation is simple and reliable.