A heat map generation method, a server side, and a readable storage medium. The method includes: acquiring heat data generated in a specified geographic space within each preset time period, the heat data is used for representing the total heat data of one kind of object in one unit space in the geographic space within the preset time period; mapping each unit space with pixels in a designated display area, obtaining heat data of the pixels corresponding to each unit space, the designated display area and the designated geographic space have a same ratio, and the designated display area is part of a display area in a front-end display; and according to heat data corresponding to each pixel, and a level threshold of a color gradation, determining a color value corresponding to each pixel, and generating a heat map corresponding to the designated geographic space in each preset time period.