The effect of high-frequency magnetic field on the Marangoni convection in the floating zone (FZ) silicon melt has been investigated numerically. The purpose of the study is to clarify the applicability of the high-frequency magnetic field on the suppression of the Marangoni convection. The numerically obtained results reveal that the high-frequency magnetic field has the dumping effect for the Marangoni convection, and is useful to control the melt convection in the space environment. Further, the higher magnetic field frequency is useful to suppress the Marangoni convection due to the skin effect. (C) 2002 Elsevier Science B.V. All rights reserved.