Circular disposable plastic lunch box

The invention belongs to the technical field of catering, and particularly relates to a circular disposable plastic lunch box which comprises a box body, a box cover and a locking piece, the side faces of the two box covers extrude each other through the locking pieces, meanwhile, the box covers and the fixing parts extrude each other, then sealing between the two box covers and sealing between the box covers and the fixing parts are achieved, food sealing is achieved, and food distribution and eating are facilitated; during eating, the locking pieces are taken down, the box covers are loosened, the box covers are rotated conveniently, the locking parts of the two box covers are separated from each other, the box covers are rotated on the box body, the box covers slide out of the box body, the box covers are taken down conveniently, and the convenience of the plastic lunch box is improved. After the locking piece is taken down, the box cover can slide from the box body, so that the box cover is prevented from