To provide a post structure which can enhance the stability in installation state of a panel and a stove guard or a vase rest using it.

A stove guard 1 is equipped with a plurality of panels 4-7 surrounding a stove 2 and a plurality of posts 8-11 arranged severally between adjacent both panels. For the stove guard 1, a front panel 4 and right flank panel 5 are coupled with a first post 8, the front panel 4 and a left flank panel 6 are coupled with a second post 9, the right flank panel 5 and a rear panel 7 are coupled with a third post 10, and the left flank panel 6 and the rear panel 7 are coupled with a fourth post 11, by the ends on one side of the upper ledges and the bottom ledges of adjacent both panels being inserted into the insertion hole at the right flank and the insertion hole at the left flank of the inner face 62. of each post 8-11. Therefore, this post structure can restrain each panel 4-7 from wobbling or moving.