A light-emitting element driving circuit comprising: an index data storage unit configured to store n-bit index data for each of a plurality of light-emitting elements included in a display device, the n-bit index data specifying a storage location of gradation data indicating brightness of a light-emitting element in the plurality of light-emitting elements: a gradation data storage unit configured to store the gradation data with m bits larger than n bits, corresponding to the index data; and a driving circuit configured to drive the light-emitting element on the basis of the gradation data corresponding to the index data so that the light-emitting element emits light at brightness according to the gradation data.