Pig slaughtering marking device

The pig slaughtering marking device comprises a bottom plate, a connecting block is connected to the middle of the upper end of the bottom plate, a first containing groove is formed in one side of the upper end of the connecting block, and fixing blocks are connected to the positions, corresponding to the two sides of the upper end of the first containing groove, of the upper end of the connecting block. According to the pig slaughtering marking device, through mutual cooperation of the shell, the motor, the first gear, the second gear, a threaded rod, a sliding block and clamping plates, a seal at the lower end of the shell can be conveniently replaced, when different pigs are marked, the two clamping plates move, a seal body is automatically taken and replaced, and the working efficiency is improved. A worker does not need to replace and fix the seal, so that the working efficiency of pig marking is improved; and through mutual cooperation of the first containing groove, the supporting and placing block, th