The invention discloses a scaleplate used for testing a burning rate of a solid hazardous article. The scaleplate is composed of a burning distance scaleplate and an ignition starting mark, wherein the burning distance scaleplate is provided with a left starting mark, a middle mark and a right starting mark sequentially, and a connecting hole is formed in the burning distance scaleplate; the ignition starting mark is composed of an upper starting mark, a lower starting mark, a cross rod and a connecting bolt, the upper starting mark and the lower starting mark are symmetrically arranged and are arranged side by side on one end of the cross rod, the other end of the cross rod is provided with the connecting bolt connected to the connecting hole, the position of the upper starting mark or the lower starting mark is the place of ignition, an area between the middle mark and the left starting mark or the right starting mark is a burning rate measuring area, and an area between two broadsides of the left starting mark and the right starting mark themselves is a wetting agent dropwise adding area. The scaleplate used for testing the burning rate of the solid hazardous article is used for delimiting a stacking burning distance of a sample to be tested in a burning rate test, is capable of being in left-right common use, and provides a strong guarantee for accurately measuring the burning time in a unit distance; in addition, the scaleplate used for testing the burning rate of the solid hazardous article is simple in structure, easy to operate and low in cost.