To dispense with a reading work or an input work by an operator, and to inspect with sufficiently high reliability.

In this system, it is inspected whether a transmission belt 37 satisfies an inspection specification or not, and the inspection result is stored. The system has an instruction card 120 provided on the transmission belt 37, and having readably belt information for specifying the transmission belt 37, this belt inspection device 40 capable of reading the belt information from the instruction card 120, for acquiring the inspection specification corresponding to the read belt information, inspecting the transmission belt 37, and outputting the inspection result, and a production management controller 22 or the like in communication with the belt inspection device 40 so that inspection related data can be transmitted or received, for outputting the inspection specification corresponding to the belt information to the belt inspection device 40 when the belt information is inputted from the belt inspection device 40, and storing the inspection result when the inspection result is inputted from the belt inspection device 40.