The invention relates to the technical field of kitchen ware, and in particular to a cooker body applied to low-pressure cooking. The cooker body applied to low-pressure cooking provided by the invention comprises a cooker main body which is provided with an opening facing upwards, wherein the bottom of the cooker main body is in smooth sealed connection to a cooker bottom; the cooker main body is of an elliptic structure; partition boards are arranged in the cooker main body; by virtue of the partition boards, the interiors of the cooker bottom and the cooker main body are divided into at least two cooking compartments; a flange, which extends outwards, is arranged at the opening end of the cooker main body; a platform, which sinks downwards and is represented as an ellipse, is arranged at the inner side of the flange; and arcs are arranged on parts where the partition boards and the cooker bottom are connected. The partition boards are arranged in a mode of being parallel to a long axis of the ellipse or being parallel to a short axis of the ellipse. The cooker body provided by the invention is exquisite and practical in design, concise and smooth in structure, simple to operate, safe and wear-resistant; food materials, which are used for cooking, can be well cooked easily, and meanwhile, original fragrance of the food materials can be reserved; and consumption of energy can be also effectively reduced, so that cost is reduced, and purposes of energy conservation and environment protection are achieved.