Map drawing method and device, medium and electronic apparatus

Provided are a map drawing method, a map drawing device, a computer-readable storage medium and an electronic apparatus. The map drawing method comprises scanning a boundary of a surface medium region to generate an initialized region; merging boundary coordinates of the initialized region to obtain a merged region; dividing the merged region into a plurality of sub-regions according to a preset shape; and drawing the boundary of the surface medium region based on the sub-regions and the merged region to obtain a map of the surface medium region. The method can improve the detailedness of the drawn map of the surface medium region.