Die steel surface flatness detection device

The utility model discloses a mold steel surface flatness detection device, which comprises a workbench and a detection assembly, the bottom of the workbench is fixedly connected with a plurality of fixed columns, the bottoms of the plurality of fixed columns are rotatably connected with threaded sleeves, the threaded sleeves are internally in threaded connection with a plurality of threaded rods, and the threaded rods are in threaded connection with the detection assembly. A horizontal observation part is arranged on the upper surface of the workbench, a sliding groove is formed in one side of each fixing column, a sliding rod is slidably connected into each sliding groove, and one end of each sliding rod penetrates through the workbench. According to the utility model, the workbench can be in a horizontal state, the flatness of the surface of a steel material can be conveniently detected, the detection accuracy of the detection device is improved, a worker can conveniently judge the horizontal state of the