Abstract: The present invention relates to an automatic sorting compression machine for iron, aluminum cans and plastic bottles. An inlet is provided atop the main body of the present invention. At least one detecting switch is arranged in a preset position of the inlet. A receptacle is disposed under the inlet. A one-way outlet and a two-way outlet are fitted at the front and rear ends of the receptacle. An exit selector controlled by a change-over magnetic valve is disposed at the two-way outlet. A container is placed under each of the three channels of the outlets. The press shaft of a spindle passes through the receptacle. The press shaft is fitted with an electrified magnet and an electrified pole at the front end thereof while another electrified pole opposite to the electrified pole is mounted in preset position of the main body. A microswitch is disposed in the farthest position of the press shaft being drawn back.