PROBLEM TO BE SOLVED: To reduce the burden on a tester in evaluating an operation training simulator for a plant and to shorten a period for development.SOLUTION: An operation training simulator comprises a simulation result recording unit 2 which records simulation results of a simulation calculation unit 1, a relevant parameter data table 12, an input unit 11 to which a test event name indicated by a user is inputted, a simulation data extraction unit 13, a trend data processing unit 14, and an output unit which outputs results obtained by processing trend data in the trend data processing unit. The relevant parameter data table stores therein relevant parameter names corresponding to test event names, an event occurrence time determination condition, and an extraction time determination condition. The simulation data extraction unit reads out a relevant parameter name corresponding to the test event name inputted to the input unit from the relevant parameter data table and extracts trend data of the read-o
