Abstract: An external photoflash assembly is composed of a back cover, a control circuit, an illuminant, a battery, and an illuminant switch. The back cover is fixed to a mobile phone. The control circuit, the illuminant, the battery, and the illuminant switch are mounted onto the back cover and electrically connected with one another. The illuminant and the shutter button of the mobile phone are located at two sides of the mobile phone separately and correspond to each other in position. When the shutter button is pushed, the illuminant switch can be pushed at the same time to activate the illuminant for illumination to further improve the photographing quality.