Model that describes the flow and heat transfer in the crystallizer during inverse solidification was developed based on continuum equation. The variety of strip thickness in the crystallizer during inverse solidification was calculated by finite differential method. Strip thickness increases rapidly in initial stage

then keeps constant in middle stage

and finally rapid decreases due to remelting in last stage with the increase of holding time of the strip in liquid steel. Lower strip drawing velocity has slightly effect on the whole flow field due to the same flow of liquid steel tightly close to strip while local or the whole flow field changes with either higher or varying in drawing velocity. The calculated results illustrated that numerical simulation calculated data are well agreement with the experimental data.