The invention discloses a method for machining blind holes on a high-hardness metal material in batches and belongs to the technical field of processing. The method for machining the bind holes on the high-hardness metal material in batches comprises the following steps of: arranging a workpiece on a rotary workbench; opening blind holes on the workpiece by using a drill bit with an apex angle alpha of 140 to 160 degrees; when the shapes of the bottoms of the blind holes are close to circular arcs, expanding the processed blind holes by using a ball-end milling cutter to ensure that the residual amount of the peripheries of the blind holes is 0.2 to 0.5 mm; and performing finish machining on the blind holes by using a spiral ball-end reamer cutter to ensure that the machining accuracy of the blind holes is 0 to 0.02 mm. By the method for machining the blind holes on the high-hardness metal material in batches, the blind holes can be machined on the metal material with the hardness of more than HRC 40 in batches, the wearing of a machining cutter is reduced, the service life of the cutter is prolonged, time for replacing the tool is reduced and the machining cost is greatly reduced.