Isolated fireproof power distribution cabinet

The invention discloses an isolated fireproof power distribution cabinet which comprises a cabinet body, the upper end of the cabinet body is provided with a liquid storage tank used for being filledwith a fire extinguishing agent, the upper end of the side wall of the cabinet body is symmetrically provided with sliding grooves, each sliding groove is internally and elastically connected with a sliding block through a reset spring, and each sliding block is connected with the corresponding sliding groove in a sealed and sliding mode. When a fire breaks out in the cabinet body, high-pressure carbon dioxide gas in a liquid storage tank can be quickly released and sprayed into the cabinet body by utilizing a first memory spring so as to control the fire behavior, meanwhile, a plurality of ventilation openings can be blocked; high-pressure carbon dioxide gas is prevented from escaping to the outside through the ventilation opening, carbon dioxide gas filled in the cabinet body can be stored in the cabinet body fo