Mounting structure of gas monitoring alarm

The utility model discloses an installation structure of a gas monitoring alarm, which comprises an installation shell, the installation shell comprises a main shell, wire penetrating bodies and a fixing head, the fixing head is arranged at the edge of the main shell, and the wire penetrating bodies are arranged at the two sides of the top end of the main shell; by designing a reinforced fixing mechanism, a bolt can penetrate through the interior of a fixing head to fixedly mount a mounting shell, after the mounting shell is fixedly mounted through the bolt, a rotating nut is rotated to drive a lead screw to rotate, and when the lead screw rotates, a moving head and an anti-skid extrusion plate are moved on the outer surface of the lead screw; an anti-skid extrusion plate drives a limiting block to slide in a limiting groove in a limited mode when moving in a groove, the anti-skid extrusion plate stably moves to be tightly pressed on the surface of a bolt, a mounting shell is fixedly mounted through the bolt