To provide a folding/expanding portable table for barbecue which is made smart in appearance and convenient for carriage and further equipped with wideness for uses as well.

In the folding/expanding portable table for barbecue, two laterally long and rectangular table plates each having a folding/expanding leg on the inner surface of an outer corner are provided, a slide bar having a bending supporting point is bridged between the inner surfaces of both the sides of each table plate to connect two table plates to be freely folded/expanded, and a mat board is hung and attached for expanding the area on the table and putting on/putting in a portable oven for barbecue by forming an expansion gap between two table plates by drawing and expanding the slide bar.