A flexible organic light emitting diode (OLED) display device is provided and includes a housing and an OLED display panel disposed in the housing. The housing comprises a substrate having at least one first bending section disposed in the middle of the substrate and the OLED display panel is disposed on the surface of the substrate. The beneficial effects are that the OLED display panel is supported and protected by disposing a housing which adapts to the OLED display panel before and after the OLED display panel is bent to prevent the OLED display panel from being extruded, thereby preventing damage to the OLED display panel.