An electronic make-up mirror device and a background switching method thereof are provided. The electronic make-up mirror device includes a screen, an image capturing device and a gesture sensor. The method includes following steps. An initial image is captured by using the image capturing device, and an initial frame including the initial image is displayed through the screen. The initial image is analyzed to obtain a foreground object and a background image, where the foreground object includes a face image. A background selection frame is displayed through the screen in response to a first operation according to whether the first operation performed to the initial frame is received. The foreground object and a predetermined background image are integrated in response to reception of a second operation performed to the background selection frame, so as to generate an integrated image, and a switched result frame including the integrated image is displayed.