A device configuration-parsing system, comprising a configuration editor, a configuration compiler and a configuration parser; wherein the configuration editor implements engineering configuration page design and parameter configuration to generate an xml description file of user configuration data; the configuration compiler converts the xml description file of user configuration data to generate a configuration data file; and the configuration parser is deployed on a physical machine or an analog machine or an upper computer of the device, and parses the configuration data file and periodically generates run data, comprising internal variable data, engineering page data and human-machine operation data, characterized in that the device is a nuclear-grade safety display device and wherein the configuration parser forms a configuration simulator together with an instruction control module, an I/O interface, a data management module, a network variable xml parsing module and an I/O buffer; wherein the instruction control module allows for different working modes by controlling and scheduling the data management module, the configuration parser, the network variable xml parsing module and the I/O interface; the I/O interface implements simulation of hardware functions possessed by the physical machine; the data management module provides a partitioned storage and management of running process data periodically generated by the configuration parser, and the running process data can be reloaded to run in the configuration parser, thereby reproducing a historical running process; the network variable xml parsing module graphically displays a network variable list and provides simulation monitoring and simulation intensity modulation; and the I/O buffer temporarily stores process data to be loaded or periodically generated by the configuration parser. wherein the configuration editor implements engineering configuration page design and parameter configuration to generate an xml description file of user configuration data; the configuration compiler converts the xml description file of user configuration data to generate a configuration data file; and the configuration parser is deployed on a physical machine or an analog machine or an upper computer of the device, and parses the configuration data file and periodically generates run data, comprising internal variable data, engineering page data and human-machine operation data, characterized in that the device is a nuclear-grade safety display device and wherein the configuration parser forms a configuration simulator together with an instruction control module, an I/O interface, a data management module, a network variable xml parsing module and an I/O buffer; wherein the instruction control module allows for different working modes by controlling and scheduling the data management module, the configuration parser, the network variable xml parsing module and the I/O interface; the I/O interface implements simulation of hardware functions possessed by the physical machine; the data management module provides a partitioned storage and management of running process data periodically generated by the configuration parser, and the running process data can be reloaded to run in the configuration parser, thereby reproducing a historical running process; the network variable xml parsing module graphically displays a network variable list and provides simulation monitoring and simulation intensity modulation; and the I/O buffer temporarily stores process data to be loaded or periodically generated by the configuration parser.