This application relates to an adjustable tablet counting plate. The counting plate includes a main frame, with a display panel slidably connected to the inner wall of the main frame. A limit frame is provided on the inner wall of the display panel. Third grooves are formed at both ends and on both sides of the limit frame. Threaded rods are slidably connected to the inner walls of the third grooves. First partitions are fixedly connected between the threaded rods at the same end, and second partitions are fixedly connected between the threaded rods on the same side. An aggregation component is provided at the bottom of the limit frame, and a collection component is provided in the middle of the bottom of the main frame. Evenly distributed scale lines are formed at one end and one side of the top of the display panel. A cover plate is slidably connected to the outer wall of the main frame. First grooves are formed on both sides of the cover plate, and the first grooves are slidably connected to a first scraper. The adjustable tablet counting plate provided in this application allows for flexible adjustment of the counting plate's size to accommodate the counting of tablets of different sizes, thus enabling rapid counting.