The invention relates to the technical field of industrial controller devices, and discloses a modular industrial controller device, which comprises a lower cover, a main circuit board, multiple typesof module circuit boards, an upper cover, a display panel and mounting screws, wherein user plugs are arranged on two sides of the main circuit board, a plurality of groups of main circuit board connectors are arranged in the middle, each main circuit board connector comprises a main circuit board plug used for electrical connection, a main circuit board fastener used for structure connection andtwo anti-misoperation slots, and different numbers of indicating lamps are arranged on the upper portions of module circuit boards. The module circuit boards can be flexibly configured according to different requirements; an industrial controller with a specific function can be rapidly assembled, the module circuit boards can be changed and added or cut according to requirements; the whole industrial controller does not need to be replaced; the module circuit board and the main circuit board are vertically connected through the connector; and disassembly and assembly are convenient, connection is firm, misplugging can be prevented, and the structure is simple and compact.