Ventilation structure for building

The ventilation structure comprises a filter box, the lower end of the left side of the filter box is fixedly connected with a connecting rod, the left side of the connecting rod is provided with an air outlet net, a ventilation groove is formed in the connecting rod, the right end of the ventilation groove is fixedly connected with a motor, the right end of the motor is connected with a rotating shaft in a sleeved mode, and the right end of the rotating shaft is provided with an air outlet net. An air suction fan is arranged on the surface of the rotating shaft, an air inlet net is arranged at the right end of the inner side of the filter box, a filter layer is arranged on the left side of the air inlet net, and a disinfection layer is arranged on the left side of the filter layer. According to the indoor air purification device, external air can be better sucked in through the arranged filter box and the arranged connecting rod, so that indoor air is fresher, then the external air can be better purified thr