The invention discloses a serial number hot-stamping die used for a hot-stamping machine. The serial number hot-stamping die is made of metal materials and comprises a main shaft, first bead screws, second bead screws, a first high-temperature-resistant bearing, a second high-temperature-resistant bearing and a plurality of modules, wherein the main shaft is provided with a heating device, and the modules are provided with different Arabic numerals; the main shaft is arranged on a mounting support, and the first high-temperature-resistant bearing and the second high-temperature-resistant bearing are arranged on the main shaft; a first rotary table is arranged on the first high-temperature-resistant bearing, and a second rotary table is arranged on the second high-temperature-resistant bearing; and the first bead screws penetrate through the mounting support to be connected into first bead holes in an abutting mode, and the second bead screws penetrate through the first rotary table to be connected into second bead holes in an abutting mode. According to the serial number hot-stamping die used for the hot-stamping machine, when plastic products are hot-stamped, for different serial numbers, corresponding serial numbers can be obtained only by adjusting the corresponding rotary table of the serial number hot-stamping die, the hot-stamping die does not need to be replaced again, a user does not need to wait till the hot-stamping die is heated to the set temperature either, time and labor are saved, and the production schedule is ensured.