Map image data filling method and terminal

The invention discloses a map image data filling method and a terminal, and the method comprises the steps: amplifying an original map by a preset magnification according to an amplification instruction to obtain an amplified map, and judging whether the amplified map has a map hole or not; if yes, respectively filling the amplified map according to a plurality of preset interpolation methods to obtain a plurality of filled maps; respectively reducing the plurality of filling maps according to the preset multiplying power to obtain a plurality of comparison maps; the similarity between each comparison map and the original map is obtained, and a filling map corresponding to the comparison map with the highest similarity is obtained and displayed; in the display process of the interpolation algorithm, the filling map is shrunk by utilizing the hierarchical characteristics of the map data and then is compared with the original map to obtain the similarity, so that the automatic filling of the missing in the map