To improve an operating efficiency of a loom by reducing warp breakages.

In this guide device for the rapier band in a rapier loom, guide plates 11, 12 to be arranged in a reed holder 21 are arranged in plural rows. The guide plates 11, 12 in each row are able to be shorten by the lengths of their guide faces 11a, 12a, thus, pushing up of warp yarns caused by crossing the guide faces 11a, 12a with warp yarns which form warp yarn rows, and chances of occurring warp breakages can be reduced.