A foldable display apparatus, comprising a flexible display screen and a bearer component, wherein the bearer component comprises a first plane part, a first bending part, a second plane part, a second bending part, and a third plane part that are sequentially connected in a long side direction, a length of the first bending part in the long side direction is greater than a length of the second bending part in the long side direction, the first plane part, the first bending part, the second plane part, the second bending part, and the third plane part jointly bear the flexible display screen, the third plane part is folded between the first plane part and the second plane part through bending and deformation of the first bending part and the second bending part, and parts, of the flexible display screen, borne by the first plane part and the second plane part are exposed; wherein the foldable display apparatus further comprises a first housing (3, 41), and the first housing (3, 41) is fastened to a side of the second plane part or the first plane part or the third plane part, away from the flexible display screen; wherein the flexible display screen comprises a first plane display area, a first bending display area, a second plane display area, a second bending display area, and a third plane display area, the first plane display area overlaps the first plane part, the first bending display area overlaps the first bending part, the second plane display area overlaps the second plane part, the second bending display area overlaps the second bending part, and the third plane display area overlaps the third plane part; wherein the foldable display apparatus further includes a controller fastened in the first housing (3, 41), the controller being electrically connected to the flexible display screen and configured to light up or turn off at least one of the first plane display area, the first bending display area, the second plane display area, the second bending display area, and the third plane display area; wherein, when the foldable display apparatus is in the folded state, the first plane display area and the second plane display area are respectively located on a front side and a rear side of the foldable display apparatus and the controller is configured to light up at least one of the first plane display area or the second plane display area, and other areas of the flexible display screen remain in an off state; wherein the controller includes a first obtaining unit, a second obtaining unit, a comparison unit, and a driver unit, the first obtaining unit is configured to obtain a first contact area that is of the first plane display area and that is in contact with the user, the second obtaining unit is configured to obtain a second contact area that is of the second plane display area and that is in contact with the user, the comparison unit is configured to compare the first contact area with the second contact area, the driver unit is configured to light up the first plane display area when the first contact area is less than the second contact area, or to light up the second plane display area when the second contact area is less than the first contact area. wherein the flexible display screen comprises a first plane display area, a first bending display area, a second plane display area, a second bending display area, and a third plane display area, the first plane display area overlaps the first plane part, the first bending display area overlaps the first bending part, the second plane display area overlaps the second plane part, the second bending display area overlaps the second bending part, and the third plane display area overlaps the third plane part; wherein the foldable display apparatus further includes a controller fastened in the first housing (3, 41), the controller being electrically connected to the flexible display screen and configured to light up or turn off at least one of the first plane display area, the first bending display area, the second plane display area, the second bending display area, and the third plane display area; wherein, when the foldable display apparatus is in the folded state, the first plane display area and the second plane display area are respectively located on a front side and a rear side of the foldable display apparatus and the controller is configured to light up at least one of the first plane display area or the second plane display area, and other areas of the flexible display screen remain in an off state; wherein the controller includes a first obtaining unit, a second obtaining unit, a comparison unit, and a driver unit, the first obtaining unit is configured to obtain a first contact area that is of the first plane display area and that is in contact with the user, the second obtaining unit is configured to obtain a second contact area that is of the second plane display area and that is in contact with the user, the comparison unit is configured to compare the first contact area with the second contact area, the driver unit is configured to light up the first plane display area when the first contact area is less than the second contact area, or to light up the second plane display area when the second contact area is less than the first contact area.