A flexible display device and a flexible display apparatus are provided. The flexible display device includes a flexible display module; an attaching frame fixed and connected with the flexible display module; a bending component disposed below the flexible display module, and fixed and connected with the attaching frame; and an elastic layer disposed between the flexible display module and the bending component, and attached on a bottom of the flexible display module. The elastic layer is bendable around a bending axis. Thus, the characteristics of easy assembling and flatness can be improved.