The invention discloses an electric-drive four-footed bionic robot which comprises an electric control system driving the robot to move and further comprises a head. The head is connected with a front trunk through a neck and a head connecting rod. The head and the neck are in linkage. The front trunk and a rear trunk are connected. A tail is arranged at the rear portion of the rear trunk and hinged to the front trunk through a tail connecting rod, so that the tail and the front trunk are in linkage. Front legs are arranged on the two sides of the front trunk, and rear legs are arranged on the two sides of the rear trunk. The length of the rear legs is larger than that of the front legs. The widest position of the front trunk is wider than that of the rear trunk. The front trunk and the rear trunk are independently designed and freely connected through a waist. The relative pitching movement of the front trunk and the rear trunk can be achieved through the freedom degree of the waist, so that the overall movement of the robot is more coordinative and stable.