Text event automatic map plotting optimization method and system

The invention relates to the technical field of natural language graph information display, in particular to an automatic graph plotting optimization method and system for a text event, and the method comprises the steps: extracting time-space semantic element information related to a target event in an event text, and carrying out the arrangement and storage of the time-space semantic element information through employing a specified data structure format, thereby achieving the automatic graph plotting optimization of the target event. The spatio-temporal semantic element information comprises event subjects and spatio-temporal relationships of the event subjects; converting the obtained geographic name longitude and latitude of the target event and the spatial relationship in the element information into a range grid by using an earth discrete grid, and converting a grid result into a surface element or a point element according to a semantic text category, so as to determine the longitude and latitude info