To provide a honing tool capable of executing the honing with high straightness and accuracy by preventing vibration and rock of grind stones and stably holding the grind stones.

In this honing tool, a tip large-diameter part 2 is formed with plural fitting hold groove parts 4 in a radial pattern from an inner hole to a peripheral part to allow slidable fitting-in of the grind stone members 10. The upper face of each the groove part 4 is formed with a guide upper face 5, the lower face of the groove part 4 is formed with a guide lower face, and both side faces of the groove part 4 are formed with guide side faces 7. The upper face of each the grind stone member 10 fitted in each the groove part 4 is formed with a slide upper face 11 slidingly contacting the guide upper face 5, the lower face of the grind stone member 10 is formed with a slide lower face 12 slidingly contacting the guide lower face, and both side faces of the grind stone member 10 are formed with slide side faces 15 slidingly contacting the guide side faces 7. An upper part of each the grind stone member 10 on the inner hole side is formed with a taper face 14a receiving press force from a taper rod 20.