An electronic device includes a light transmissive casing and a light emitting module. The light emitting module is disposed on the light transmissive casing. The light emitting module includes a frame, a light source and a pattern member. The light source is disposed in the frame. The frame is connected to the light transmissive casing. The pattern member is sandwiched in between the frame and the light transmissive casing. The pattern member has at least one light transmissive pattern region. A light emitted by the light source passes through the at least one light transmissive pattern region to be projected out of the light transmissive casing, so as to form a pattern corresponding to the at least one light transmissive pattern region.