Energy-saving ventilation equipment for building

The utility model relates to the technical field of building energy-saving ventilation, in particular to building energy-saving ventilation equipment which comprises a ventilation box, a purification device fixedly arranged in the ventilation box, a ventilation device fixedly arranged in the ventilation box, and a ventilation opening fixedly formed in the surface of the ventilation box. A ventilation pipeline is fixedly arranged on one side of the ventilation box, a heating device is fixedly arranged at the bottom end of the ventilation pipeline, and a foreign matter prevention pipeline is fixedly arranged on one side of the ventilation pipeline. According to the building energy-saving ventilation equipment, firstly, the motor is installed on the surface of the top end of the ventilation pipeline, the rotating shaft is driven to rotate through operation of the motor, dust and other impurities attached to the inner wall of the ventilation pipeline can be removed and fall into the garbage collection disc to be