Building block robot straight-line connecting device

The invention discloses a building block robot straight-line connecting device, which comprises a middle connecting part, wherein two connecting pieces are oppositely arranged on the outer wall of themiddle connecting part. Compared with the prior art, the robot effectively solves the problem that the block building is constrained because the splicing form is single and the connecting mode is less in the prior art; the middle connecting part is relatively provided with the structures of the connecting pieces, and the middle connecting part per se can be connected, so that the building item isstronger in selectivity, the space is saved, the connecting mode is increased, the structure is simplified, and the rich diversity of block building is improved; and the effective butt joint with other block building products and connectors is completed through plugs and connecting holes of the device, so that the splicing effect which cannot be completed before is effectively improved, the richeffect of the items is effe