Building fence capable of being freely spliced

The building fence capable of being freely spliced comprises a frame, a connecting mechanism comprises square rods, square grooves, top plates, bottom plates, threaded holes, bolts, square blocks and baffles, the square grooves are machined in the outer sides of the square rods, the square blocks are movably connected to the inner sides of the square grooves, one sides of the square blocks are fixedly connected with the outer side of the frame, and the other sides of the square blocks are fixedly connected with the outer side of the frame. Baffles are attached to the front faces of the square block and the square rod, a top plate and a bottom plate are fixedly connected to the upper side and the lower side of the square rod respectively, threaded holes are machined in the inner sides of the top plate and the bottom plate, and bolts are connected to the inner sides of the threaded holes in a threaded mode. The utility model relates to the technical field of guardrails, realizes the splicing of the device in th