The invention discloses an electronic grain unloading granary with relatively uniform grain distribution. The electronic grain unloading granary comprises double warehouses and a grain unloading device, wherein self-rotated type grain distributors are respectively arranged inside a first warehouse and a second warehouse; the grain unloading device comprises a first packing auger, a second packing auger and a driving device; the driving device comprises a driving motor with a driving wheel and a linked switching device; the linked switching device comprises a rack body, a transmission wheel group, guide plates and a toothed gear component; the transmission wheel group comprises a transmission shaft, a transmission belt pulley and a transmission gear; guide holes are formed in the guide plates; the toothed gear component comprises a toothed gear and a guide part for limiting the toothed gear to slide along the guide holes in a reciprocation manner; the guide part is positioned in the guide holes; when the guide part slides to one ends of the guide holes, a first driven gear is driven by the transmission gear to rotate through the toothed gear; when the guide part slides to the other ends of the guide holes, a second driven gear is driven by the transmission gear through the toothed gear. The electronic grain unloading granary is relatively uniform in grain distribution, capable of storing two types of grains, and in addition relatively low in manufacturing cost.