A system for achieving automatic generation and operation of an ATP electric power system simulation calculation model comprises a data format processing module, a simulation calculation model main file generating module, a data card generating module, a simulation calculation model program generating module, an automatic simulation calculation model program executing module, a simulation calculation result reading module, a simulation calculation model parameter adjusting module and a simulation calculation result outputting module. The data format processing module is used for converting original data of an electric power system; the simulation calculation model main file generating module is used for generating a model main file and adding a text of an involved element in the main file; a corresponding data card is connected with the simulation calculation model program generating module after being generated by the data card generating module; an executing program result of the automatic simulation calculation model program executing module is read by the simulation calculation result reading module and adjusted by the simulation calculation model parameter adjusting module, and the simulation calculation result outputting module outputs and displays the simulation calculation result meeting the requirements.