To provide a method of controlling operation of an electric melting furnace for melting municipal refuse and refuse burned residue permitting efficient, stable, and automatic operation of the electric melting furnace with low running cost.

In this method of controlling operation of the electric melting furnace for melting municipal refuse and refuse burned residue, input power or melted matter supply quantity into the electric melting furnace is set, and the melted matter supply quantity or the input power into the electric melting furnace is calculated on the basis of the respective set values. The melted matter supply quantity and the input power are respectively controlled via a controller such that the input power and the melted matter supply quantity into the electric melting furnace equal to the set value and the calculated value or that the melted matter supply quantity and the input power into the electric melting furnace are the set value and the calculated value.