A flash illumination device for use with an electronic apparatus is provided and includes a connection unit and at least one organic light-emitting diode unit. The electronic apparatus includes a video shooting component or a display screen. The connection unit electrically connects with the electronic apparatus. The organic light-emitting diode unit is coated on a lateral surface of the connection unit and electrically connected to the electronic apparatus through the connection unit. The organic light-emitting diode unit starts under the control of the electronic apparatus and emits instantaneous light or persistent light, which is conductive to low power consumption and characterized by surface emission, while the video shooting component is capturing an image, so as to provide supplemental lighting.