A paiiet changing apparatus which adopts a table 4 that is able to move back and forth in relation to a turning shaft 1 and has a oscillating portion 41 for placing workpieces W, W' by way of pallets P, P' so as to oscillate freely by means of a rising portion 42 at the leading end of the table, and a bridging extending portion 31 which briges supporting portion of pallet P or P' in a pallet changing arm 3 with the both sides of the turning shaft 1 forms a shape of covering across upper side of the rising portion 42 at a stage of the table 4 transferring pallet P.