A heating and air purifying apparatus using electronic device heat includes: a cabinet accommodating electronic devices including a central processing unit (CPU), a graphic processing unit (GPU), a power supply unit (PSU), and a main board, having an air inlet on a side, and having an air outlet on a top; one or more partition plates disposed vertically, horizontally, or diagonally across the inner surface of the cabinet; and a discharge fan installed at the air outlet and discharging air in the cabinet to the outside, in which a cooling fan of the GPU is disposed on a side of the one or more partition plate, a GPU body including a graphic card of the GPU is disposed on the opposite side, and the CPU, the PSU, and the main board are accommodated in a space facing a side of the one or more partition plate.