The utility model relates to the technical field of automatic production. The utility model relates to a robot, in particular to a five-axis stacking double-rotation-joint robot. A rotating seat assembly is arranged above a base assembly; the rotating base assembly rotates around the base assembly through the first rotating shaft joint, the big arm assembly rotates around the rotating base assembly through the second rotating shaft joint, the tail end of the big arm assembly is connected with the small arm assembly, the small arm assembly rotates through the third rotating shaft joint in the big arm assembly, and the tail end of the small arm assembly is connected with the five-shaft base assembly. According to the robot, by means of the tail end output offset structure, the outer rotatingmotion mode can be achieved, the inner rotating motion mode can also be achieved, the robot moves by means of the inner rotating motion mode, two shafts and three shafts are used for replacing one shaft, and therefore the advantages of being minimum in energy consumption, highest in speed and minimum in inertia are achieved.