The invention relates to the technical field of robots, in particular to a double-sucker wall-climbing robot using a crossing moving mode. The robot includes two vacuum suckers, two ventilation structures, two telescoping structures, two connecting structures and a curving structure. The robot is in an overall symmetrical structure. By inflation and deflation of the structure of the invention andcontrolling the volume of inflation and deflation, the structure achieves the corresponding motion so as to achieve the motion and wall surface transferring process of the robot on the wall surface. The robot also has the advantages of simple structure and feasible motion. The robot is suitable for large-scale production.