To provide a toolbox for penmanship good in maneuverability of a writing brush without damaging the writing brush housed therein.

An L-shaped writing brush pressing and mounting piece 11 extended perpendicularly to elongated writing brush housing parts 9 and 10 is pivotally attached to the side parts of the writing brush housing part 9 or 10. Circular arc shaped recessed parts 18 and 19 are respectively provided in the lower surface side and the upper surface side of the long arm 17 of the writing brush pressing and mounting piece 11 so that the shafts of writing brushes 13 and or 14 housed in the circular arc shaped recessed parts 18 in the lower surface side are pressed and fixed to prevent the damage of the ends of the writing brushes upon carrying. The shafts of the using writing brushes 13 and 14 are mounted on the circular arc shaped recessed parts 19 in the upper surface side to easily grip the respective writing brushes 13 and 14.