The invention relates to an electrical power system figure cross-platform display method. The method solves the problems that cross-platform cross-browser display of electrical power system figures cannot be achieved in the prior art, so that staff and workplace are limited. The method comprises the steps of through setting SVG figure display and storage, displaying an SVG figure embedded in a webpage, storing the SVG figure, receiving and updating electrical power system data, displaying the SVG figure, obtaining and storing telemetering and remote signalling information in the SVG figure, and conducting updating. The electrical power system figure cross-platform display method has the advantages that the electrical power system figure adopts a SVG document, figure memory space is small, the figure does not distort during network transmission, and instantaneity is good; the electrical power system figure has the characteristic of no distortion after amplification; the electrical power system figure is displayed in a webpage way, the working place of users is not limited in a dispatching room in a traditional scheduling mode, so that the work of dispatchers has more flexibility.