The coat color of the long-eared mouse is light, mostly sandy yellow or sandy gray, dull, and close to the scenery of the habitat. The long-eared mouse has a pointed snout, small eyes and large ears, almost half the length of the head and body. It is the animal with the largest proportion of ears.

The long-eared mouse is about 8~10.5 cm long and has a long tail About 15-19 cm, with a tail at the end. Long-eared mice are mostly nocturnal, and spend the day in underground burrows.