An industrial vehicle remote operation system includes an industrial vehicle including a vehicle communication portion, a communication device, and, a first signal conversion portion. The communication device includes a reception portion that receives two or more types of operation signals, an obtainment portion that obtains a conversion program for converting the operation signal into the remote instruction signal, a storage portion configured to store the conversion program, a second signal conversion portion configured to convert the operation signal into the remote instruction signal using the conversion program, and a communication device communication portion that sends the remote instruction signal to the vehicle communication portion. The communication device includes an update portion configured to update information stored in the storage portion so as to enable addition, deletion, or change of one or more of the operation signals that are convertible by the second signal conversion portion.