Abstract: A device and a method for inspecting openings of a powder metallurgy disk body with multiple openings, comprising a workbench, wherein an arch frame is fixedly provided on the workbench, an inspection unit for inspecting depth and width of openings in a powder metallurgy disk body is arranged on the arch frame, a positioning and ejection mechanism for positioning and ejecting the powder metallurgy disk body is also arranged on the workbench; lateral micro switches are fixedly mounted on inner side walls of lower ends of the two rods, spring pieces A of the lateral micro switches are arranged inwardly, and rollers are rotatably mounted on upper ends of the two rods via pins; the bottom surfaces of the two lifting plates are both fixedly provided with arc-shaped protrusions, and the two arc-shaped protrusions respectively abut against top surfaces of the two rollers under elastic force of the springs.