The requirements for machining include higher precision and productivity. To achieve these, measures against thermal deformation of machine tools and forced cooling of cutting heat are necessary. In recent years, there is also strong demand for energy-saving, resource-saving and environmentally friendly manufacturing in response to the SDGs and carbon neutrality. Under these conditions, it is an extremely difficult task to determine the optimum machining conditions while taking into account the need for high precision and improved productivity. In drilling, too, it is desired that the optimum drilling conditions can be determined instantaneously, but the variety of workpieces and drills makes it difficult to find the optimum drilling conditions for them. In this study, the FEM simulation technique that can calculate drill tip temperatures with high accuracy for the inputs of workpiece and drill materials, hole diameter and hole depth instructions and machining conditions (drill speed, feed rate, step feeding and forced cooling specification) in drilling was developed and evaluated in the experiment. The results showed that the proposed FEM simulation technique could calculate the drill edge temperature with high accuracy and quickly, easily. Therefore, it was effective as a tool for searching for optimum drilling conditions.