The invention belongs to the technical field of water electrolysis hydrogen production, relates to a remote control system of water electrolysis hydrogen production, comprising an on-site instrument, a sensor, an actuating mechanism, a distributed type I/O, PLC control stations, a local monitoring station, an operating station, a server, a remote monitoring station and a mobile communication terminal, wherein the on-site instrument, the sensor, and the actuating mechanism are directly connected with the distributed type I/O; the distributed type I/O and the PLC control station are connected by a filed bus; each PLC control station is connected with the local monitoring station, the operating station, and the server by an industrial ethernet; the local monitoring station is respectively connected with the remote monitoring station and the mobile communication terminal by the internet and a short message service center so as to achieve communication; and aiming at the rectifier cabinet in a hydrogen production device, a fault diagnosis method based on Wigner-Ville distribution is used. The invention improves the automatic control level in the entire production process of water electrolysis hydrogen by the network technology, realizes the remote control and on-line maintenance of the system, greatly improves the production efficiency, and reduces the maintenance cost.