To provide a rolling mill with which the adjustable range of size is wide and simplification of equipment is enabled at the time of rolling round bars and wire steel.

The final finishing mill to a material 15 to be rolled is composed as an 8-roll type rolling mill 10 of a type in which four rolls of the preceding stage of a cross-shaped arrangement and four rolls of the succeeding stage of an X-shaped arrangement are housed in one housing block 12. The driving source of the rolling mill is taken as single, the driving force from the driving source is transmitted to one roll 16 of the preceding stage, the roll is forcedly rotationally driven. The rest rolls 18, 20, 22, 24, 26, 28, 30 are substantially in the state of free rotation, they are revolved in synchronism with feeding of the material 15 to be rolled, so the material 15 to be rolled is rolled.