Inspection device for automobile catalyst converter assembly

The invention relates to an inspection device for an automobile catalyst converter assembly. The inspection device comprises a bottom plate, a three-hole bottom plate positioning plate, a positioning plug pin and a flange positioning device, wherein the three-hole bottom plate positioning plate, the positioning plug pin and the flange positioning device are arranged on the bottom plate. Three positioning pins are arranged on the three-hole bottom plate positioning plate; the flange positioning device comprises a flange positioning plate and slide rails, bolt through holes are formed in the flange positioning plate, scales are arranged on the slide rails, and the flange positioning plate is arranged on the slide rails. Positioning detection can be conducted on all installing components of the automobile catalyst converter assembly fast and accurately by the inspection device, whether the produced automobile catalyst converter assembly is qualified or not is detected, and it is avoided that unqualified products