Desk used on bed

The utility model relates to the field of furniture and particularly relates to a desk used on a bed, and the bed can increase the space for holding articles. The desk used on the bed comprises a desk surface, a support, one or more mounting plates, one or more partition boards, wherein the support is arranged at the bottom of the desk surface and is connected with the desk surface; the one or more mounting plates are connected with the desk surface in a detachable way; the one or more partition boards are connected with the mounting plates in a demountable manner; and spaces for holding articles are formed between the desk surface and the mounting plates, between the desk surface and the partition boards, and between the mounting plates and the partition boards.