A desk needs to have a flat surface on the top for someone to put their work on. It needs to be strong enough to place heavy objects on top of. It has to be able to stand on its own. There needs to be a space underneath for a chair to fit. It needs to be large enough for someone to work on yet small enough so it can fit into a room without taking it over. It should be made out of wood most commonly or other materials like plastic or metals.