The invention discloses a cabinet type heptafluoropropane fire extinguishing device. The cabinet type heptafluoropropane fire extinguishing device comprises a fire extinguishing agent driven bottle (1), bottle group hoops (2), pressure meters (3), container valves (4), actuators (5), jet nozzles (6), a fire extinguishing agent driving bottle (7), a driving pipe (8), metal hoses (9), an electromagnetic driving device (10), safety pins (11), signal feedback devices (12) and a double-bottle cabinet body (13). The fire extinguishing agent driven bottle and the fire extinguishing agent driving bottle are arranged in the double-bottle cabinet body in parallel. The bottle group hoops are arranged on the double-bottle cabinet body. One container valve is arranged at the bottle opening end of the fire extinguishing agent driven bottle, the upper end of the container valve is provided with the actuator, the upper end of the actuator is provided with one jet nozzle, and the actuator is connectedwith the fire extinguishing agent driving bottle through the driving pipe. The upper end of the fire extinguishing agent driving bottle is provided with one signal feedback device. The upper end of each signal feedback device is provided with one safety pin. The upper end of one safety pin is provided with the electromagnetic driving device. The cabinet type heptafluoropropane fire extinguishing device provided by the invention is reasonable in structure design.