To provide an Assel mill rolling method for preventing the generation of thickness deviation in a steel tube.

In this Assel mill rolling method for preventing the generation of the thickness deviation of the steel tube, the thickness deviation is prevented by performing rolling at a setup so that the rolling reduction of thickness in the Assel mill rolling method is 40-110% of the height of roll hump. In this Assel mill rolling method for preventing the generation of the thickness deviation of the steel tube, the generation of the thickness deviation is prevented by performing the rolling at the setup so that the rolling reduction of the thickness in the Assel mill rolling is 70-90% of the height of the roll hump.