The invention relates to the technical field of education, and discloses a digital sand table with a
terrain teaching demonstration function, which comprises a cabinet body, the upper side of the cabinet body is provided with a projection
assembly, the outer side of the cabinet body is connected with a first cabinet door and a second cabinet door through hinges, the inner side of the second cabinet door is provided with a collection drawer, and the collection drawer is connected with the projection
assembly. A first square groove is formed in the top of the cabinet body, a plurality of second square grooves are formed in the outer side of the top of the cabinet body at equal intervals, a sand
pile is arranged on the inner side of the first square groove, a cleaning mechanism is arranged on the upper side of the cabinet body, a plurality of sand collecting mechanisms are arranged on the inner side of the first square groove at equal intervals, and a screening mechanism is arranged on the inner side of the cabinet body. Through cooperation of the cleaning mechanism and the dust collection mechanism, the problems of hand sand grains and sand grain scattering are solved, and the teaching experience is improved; sand grains are recycled and stored, so that the sand grains are prevented from being polluted, resources are saved and cost is reduced; all the mechanisms work automatically and cooperatively, efficiency is improved, stable operation, collection and disinfection are guaranteed, and health and safety are guaranteed.