Abstract: The height and shape of the electromagnetically supported column of molten metal in electromagnetic caster was calculated by the coupled circuit method. The influence of melt shape on system stability was, discussed. Results were presented showing the effect of current and frepuency on the shape of meniscus and the effect of voltage and frequency on the current. With variation of voltage or frequency being within ±2.5% (other operating parameters held unchanged), the variation of current is within ±2%, and the process of electromagnetic casting is in stable condition.