To provide a method for engraving line pattern based on three- dimensional numerical data on a base material such as metal, plastic or the like.

On a method for engraving pattern on the surface of a base material, especially on the engraving method of an intaglio plate surface, the pattern is a curve defined by a function and determines a locus, which equals to the position of an engraving tool consisting of the planar coordinates of the curve. The position of the engraving tool is controlled by a computer. The engraving depth from the surface of the base material of the engraving tool is determined by a value put in a reference table stored in the computer for determining the engraving depth.