The utility model provides a photovoltaic inverter box, includes the dc -to -ac converter body and is used for the box of splendid attire dc -to -ac converter body, and the cross section of this box be square, and open the bottom surface of box has the lambda line interface and the interface of being qualified for the next round of competitions, respectively is provided with a ventilation hole on the left surface of box and the right flank, is provided with a display window on the front surface of box, the top surface of box is provided with two fans, and the temperature controller of fan in through the box opens and stop, and paste the one deck on the rear surface of box and inhaled the sound cotton, still install smoke transducer in the box, the external alarm of smoke transducer connecting box. The utility model has the advantages of simple and compact structure, rationally, improved the radiating effect, the sound construction, non -deformable, impact resistance is to transportation and package cost reduction, can process arbitrary specification and dimension according to clients' requirement, and the processing cost is low, what be equipped with absorbed vibration between the rear surface of box and wall inhales the sound cotton, has played the effect of the noise that the suppressing vibration arouses.