To provide a new outer fence structure for tomb boundary stones preventing the movement and collapse of the boundary stones due to the applica tion of pressure produced by a tombstone or soil, gravel, boulders or the like filled and laid inside a tomb site, or the seepage of rainwater, etc.

In the outer fence structure for tomb boundary stones, a corner connector 5 is placed at the boundary stones 31 and 32 at each corner of the tomb to connect them together. Spacing ropes 7 are stretched between side members 51 of the corner connectors 5 opposed to each other across the site. At least the four spacing ropes stretched are covered with laid material 9 which is laid within the boundary stones, to embed the ropes.