The present invention relates to a method for configuring a generation rule for simulating historical data, generating and storing historical data, mapping a corresponding data structure of an IEC61850 log service and transmitting historical data by using a log service in an IEC61850 based status monitoring emulation test platform. Specific steps of the method comprise:1) starting an IEC61850MMS service of an emulation test platform and configuring a variation rule for simulation data through user configuration; 2) reading a trigger option of a log control block (LCB) that is set by a client, and in combination with the data variation rule of step 1), setting a variation data generator; 3) starting the variation data generator, generating a variation data stream according to the generation rule, and selecting data that meets a trigger status to store in a historical log database; and 4) when the client requests a log service, retrieving historical data, which meets a condition, from the database to a log service data structure, and performing a service request. The method satisfies the demand of a long period of historical data storage and retrieval by the log service when the status monitoring emulation test platform simulates a plurality of status detection devices, and provides a simple and low-cost means for testing and commissioning of a status monitoring comprehensive processing unit or a master station system.