To provide a crawler robot capable of easily riding over a large step even when the crawler robot is small, and performing the operation in various kinds of modes.

Rollers 10 are arranged on tops of triangular frames 12, 13, an elastic crawler 15 is wound around each roller, and both frames are connected to each other via a center spindle 11. A one-node link 4 connecting a first link 23 to a second link 24 via a rotary shaft is rotatably provided on the center spindle 11, and turnably connected to an end of the second link 24 with respect to a front shaft 29 of a driven crawler 3 having crawlers 27, 28 wound around two rollers 30, 32. A crawler robot is constituted thereby, in which a triangular crawler device 2 and the driven crawler device 3 are connected to each other via a one-node link 4. The crawler robot can be operated in various kinds of modes by turning and folding the links, and turning each crawler device in an arbitrary direction.

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