Abstract: A housing and a foldable electronic device are provided. The housing includes a middle plate, the middle plate includes a first middle plate and a second middle plate that are connected to each other, and materials of the first middle plate and the second middle plate are different. The first middle plate and the second middle plate are mated with each other to form a hinge accommodating region and a non-hinge accommodating region on the middle plate, at least a portion of the first middle plate forms at least a portion of the non-hinge accommodating region, and at least a portion of the second middle plate forms at least a portion of the hinge accommodating region. The middle plate of the housing provided in this application uses a split-type structure and uses different materials, thereby maintaining stable chemical performance when implementing reduction of a body weight.