The invention provides a GIS-based data analysis and presentation method and device and electronic equipment, and the method comprises the steps: precisely decomposing a geographic space vector sequence into a first mode decomposition vector subsequence and a second mode decomposition vector subsequence of different feature scales, and carrying out the intelligent fusion based on unit space relevance, the method effectively improves the accuracy and efficiency of geoscience information processing, enhances the spatial expression ability of data, not only realizes deep mining and integration of large-scale geoscience data, but also ensures the consistency and comparability of the data in geographic space through geographic registration and standardization processing, and lays a solid foundation for subsequent spatial analysis modeling. Through accurate generation and visual presentation of the spatial analysis modeling result, the application value of the geoscience information system is greatly enhanced, so that the processing efficiency, the analysis accuracy and the visualization effect of the data of the geoscience information system are remarkably improved, and data support is provided for deep research and wide application of the geoscience information.