The invention discloses a grinder sliding plate. The grinder sliding plate comprises a box body, a support plate which is slidably arranged on the box body and a bottom plate which is slidably arranged on the support plate; multiple first sliding grooves are formed in the box body, so that the support plate can slide in the first direction along the first sliding grooves; the support plate is provided with multiple second sliding grooves, so that the bottom plate can slide in the second direction along the second sliding grooves; the bottom plate is movably connected with a cutter grinding block; and multiple cutter grinding grooves are formed in the cutter grinding block in the length direction. By adopting the grinder sliding plate, precise positioning of the cutter grinding block can be realized; and the cost for position movement can also be reduced.