Heating and ventilating device with purification function

The utility model discloses a heating ventilation device with a purification function in the technical field of heating ventilation devices, which comprises a ventilation box, a ventilation pipe is communicated with the left end of the top of the ventilation box, an air blower is mounted on the ventilation pipe, and a dust filter screen is arranged at one side end, far away from the ventilation box, of the ventilation pipe. Rectangular blocks are installed at the upper ends of the left side and the right side in the ventilation box correspondingly, fixing mechanisms are arranged on the rectangular blocks, connecting plates and vertical plates are arranged at the top ends and the right side walls of the rectangular blocks in an attached mode correspondingly, and an activated carbon filter screen is jointly connected between the two connecting plates. A mounting plate with a U-shaped front face is mounted on the rear side wall of the lower end of the interior of the ventilation box, a heater is arranged at the