To provide a study desk with shelves whose top board is supported by a bookshelf on one side and by a leg part on the other side, allowing a user to widely use the upper surface of the top board, capable of securing a sufficient space even if a personal computer is mounted on the top board, and having the freedom of the setting position and in disposing plural units adjacently.

The top board 1 of the study desk is supported by the bookshelf 2 on one side and by the leg part 3 on the other side. The depth of the top board 1 on the one side 1A is the size covering the total width of the bookshelves 2 and 4, and the depth is tapered from the center 1C toward the other side 1B of the top board 1.