Machine room mouse blocking device

The utility model discloses a mouse blocking device for a machine room. Including a barrier, grooves are formed in the two sides of the blocking plate. An extending plate is embedded in the groove, apushing base is fixedly installed on one side of the top end surface of the extending plate, a supporting base is fixedly installed on one side of the top end surface of the blocking plate, a screw isarranged on the side, facing the supporting base, of the pushing base, a rotating handle is arranged at the end, penetrating through the supporting base, of the screw, and the rotating handle pushesthe extending plate to extend out towards the two sides. According to the utility model, the outwards extending length can be adjusted by the extension plate, so that the rat guard baffle plate is notlimited by the width of the door frame, the rat guard baffle plate is supported by the support bottom beam, a fixing strip is not required to be arranged on the door frame, and the whole mounting anddismounting are relatively e