To provide a partition tool for efficiently using a storage space of a glove box by arranging and storing articles to be stored such as a vehicle inspection certificate holder and small articles in a vehicle glove box.

A partition tool comprises a base plate (2), a partition plate (3) that is a body separated from the base plate (2), and a joint member (5). The base plate (2) is a rectangular thin plate, and forms an upper surface portion (2b) and leg portions (2c) by folding bending portions (2a) downward which are both end portions of the base plate (2) in the right and left direction. The partition plate (3) is arranged so as to move in a lateral direction and be detachably attached to the upper surface portion (2b) of the base plate (2). The joint member (5) is L-shaped and forms a closed-end insertion groove in the thickness direction, the insertion groove of the joint member (5) is engaged with the corner portion formed with the upper surface portion (2b) and leg portions (2c) of the base plate (2) to keep the bending state, and the insertion groove is engaged with the abutting portion between the upper surface portion (2b) and the base of the partition plate (3) to keep the standing state and structure the body.