The present invention relates to a method for realization of nuclear power plant dose data one-way transmission from a management network to an industry network. The method comprises: the management network is configured to encode the RWP information according to a preset rule to form a TXT format file and transmit the TXT format file to the industrial network through a one-way transmission module; the industrial network is configured to read the TXT format file in a file assigned catalog according to the time sequence and determine whether the TXT format file is legal or not; and if the TXT format file is legal, the processed data is written into the nuclear power plant access control system. According to the invention, the one-way direction data transmission and update from industrial network to the management network are realized so as to allow the work orders to perform fine classification on the nuclear power plant access control system, generate corresponding work orders according to more targeted site actual usage condition and allow the dose statistics to be more accurate and fine.