The invention belongs to the technical field of mechanical-electrical integration and particularly relates to a bionic crab robot. The invention mainly solves the problems of complicated structure, longer drive chain and bad system rigidity of an existing crab robot. The bionic crab robot is composed of a foot motion system, a pincers system, a connecting system and a control system, wherein the foot motion system comprises a bottom plate, and two sets of four-foot motion mechanisms which are respectively mounted at symmetrical positions at the front part and the rear part of the bottom plate; the pincers system comprises a rack, two pincers main bodies are respectively mounted at symmetrical positions on the left side and the right side of the rack, and each pincers main body is composed of a fixing frame, a motor frame, a swinging steering engine, two connecting buckles, a tray, a grabbing steering engine, two key-shaped rack bars, two claw bars and two connecting bars; the control system is composed of a top plate, a main controller, a power supply voltage stabilizing chip, an infrared receiving module, a stepper motor driving module, a steering engine driving module, an eye lamp and an infrared remote controller.