To make a food tray flat simply without using a large-scale device at the time of recovering the same to reduce the marketing cost thereof.

A food tray 1 is constituted of a bottom wall 2 for receiving foods, side walls 3 encircling side ends of the bottom wall 2 and breakage guide channels 6 formed on the side walls 3. Folding channels 4 are formed between the bottom wall 2 and wide walls 3, and the breakage guide channels 6 can be formed deeper than the folding channels 4 and the corners of the bottom wall 2 of polygon shape for receiving foods, side walls 3 encircling side ends of the bottom wall 2 and respective side walls can be formed into the pointed end shape.