The invention relates to the technical field of numerical control machining, and discloses a bridge-type electrical discharge machining machine tool, which includes a bed, a workbench, an X-axis direction feed mechanism, a Y-axis direction feed mechanism, a Z-axis direction feed mechanism, and an oil tank. The body is equipped with a worktable installation base and two parallel Y-axis direction guide rails. The workbench installation base is located obliquely below the Y-axis direction guide rails, and the Y-axis direction feed mechanism is opposite to the two Y-axis direction guide rails. A Y-axis direction slide groove is provided, and the Y-axis direction feed mechanism is slidably installed on the Y-axis direction guide rail through the Y-axis direction slide groove. The feed mechanism of the electric discharge machining machine tool of the present invention is directly installed on the bed without the need for a column structure, which simplifies the structure and improves the stability of the structure; and the machine tool of the present invention is provided with two parallel Y-axis direction guide rails on the bed To install the feed mechanism in the Y-axis direction to form a bridge structure, which has a compact structure, small deformation, good precision retention, and can achieve high-precision movement.