Rat fixer

The utility model discloses a rat fixing device which comprises a placing plate, an extending assembly used for extending the binding length is arranged at the bottom end of the placing plate, the extending assembly comprises an extending plate, and a first limiting piece and a second limiting piece which are used for fixing binding ropes are arranged on one side of the top end of the placing plate and one side of the top end of the extending plate respectively. By means of the design of the placing plate, the second groove, the first groove, the adjusting bolt, the extending assembly, the first limiting piece and the second limiting piece, the distance between the first limiting piece and the second limiting piece is adjusted by rotating and loosening the adjusting bolt and pulling the extending plate, so that the four limbs of the rat are bound according to the length of the rat, and the rat is prevented from being damaged. The first binding belt and the second binding belt are fixed to the first limiting b