The embodiment of the application discloses a conversion method and device of a geological static map. The method includes the steps of: obtaining a first geological static map to be converted; decoding the legal first geological static map, and obtaining a plurality of elements corresponding to the first geological static map and control information corresponding to the elements; generating a standard vector graphic element set based on the elements and the control information; obtaining a target map conversion request of a user, and converting the standard vector graphic element set into a target character string recording set with the format corresponding to the format of the target map; coding the target character string recoding set according to the format of the target graphic element, and obtaining target graphic elements and control information corresponding to the target graphic elements; and performing file coding on the target graphic elements and the corresponding control information, and generating a target format map. The conversion method and device of the geological static map provided by the embodiment of the application can fast realize the mutual conversion of different formats of maps, and improves the compilation and utilization level of the geological map.