Energy-saving and environment-friendly sand table based on urban planning three-dimensional display

The invention provides an energy-saving and environment-friendly sand table based on urban planning three-dimensional display, and relates to the technical field of urban planning sand tables. The sand table comprises a table body, a display board, a seat frame, a transmission structure and shielding boards; a display cavity and an annular cavity are further formed in the inner side of the table body, threaded rods are rotationally installed in the middles of the two ends of the annular cavity respectively, the two ends of each threaded rod are of an optical axis structure respectively, the bottom ends of the threaded rods are in transmission connection with the transmission structure, the display board is installed in the display cavity and installed on the two threaded rods, the two shielding boards are inserted into penetrating holes of the table body respectively, racks are further arranged at the two ends of the shielding boards respectively, a model is clamped by sliding clamping pieces so that replacem