Light path coaxial inspection device for eliminating Abbe error

The invention discloses an optical path coaxial inspection device for eliminating Abbe error, and relates to the technical field of optical mechanical devices, the optical path coaxial inspection device comprises an infrared light emitting mechanism, an interference reflector and a linear displacement mechanism, and the moving end of the linear displacement mechanism is connected with an assembly seat. The assembling seat is provided with an assembling hole used for installing an interference reflector, the infrared light emitting mechanism is arranged at the position right opposite to the assembling hole so that infrared light emitted by the infrared light emitting mechanism can pass through the dead center of the assembling hole, and the assembling seat is provided with a first checking mechanism and a second checking mechanism. The first inspection mechanism is used for ensuring that the position of an infrared light spot projected by the infrared emission mechanism can be fixed in the moving process of th