Fire extinguisher

The utility model discloses a fire extinguisher which comprises a portable fire extinguisher and a wall-attached mounting plate, and further comprises a slow descending groove formed in the side wall of the wall-attached mounting plate and limiting vertical grooves symmetrically arranged relative to the slow descending groove, and limiting rods are fixedly inserted into the limiting vertical grooves; a first limiting block slidably attached to the interior of the limiting vertical groove and second limiting blocks located above the first limiting block are arranged on the periphery of the limiting rod in a penetrating mode, and a fire extinguisher containing plate slidably attached to the side wall of the wall attaching mounting plate is fixed between the side walls of the second limiting blocks. And an inclined rod is fixed between the side wall of the first limiting block and the bottom of the fire extinguisher placing plate. The portable fire extinguisher can be mounted at a high position in a manner of be