Abstract: A new-type EMBR (electromagnetic brake) was specially designed for the funnel shape mold during thin slab casting because of the irregularity of the wide walls of such molds. Numerical simulations were carried out to predict the liquid steel flow under the action of the EMBR of which the positional height and magnetomotive force (the number of winding turns multiplied by the current passing through the winding) have both been changed. The results showed that the two changed parameters have slight influence on the trend of magnetic field distribution, and the distribution is heterogeneous in mold. And it was found that the region where the magnetic induction is maximum is slightly below the center of magnetic field and close to the inner surface of narrow wall of the mold. Compared with the mold without electromagnetic force exerted on it, the results showed that the liquid steel flow strands can be inhibited so as to improve the flow field greatly if the height of the new-type EMBR is in the range from 250 mm to 300 mm and the magnetomotive force are 8000 A or higher.