An electronic device capable of reducing the attenuation amount of high frequency signals transmitted through a flexible flat cable is provided. The electronic device includes: a first circuit board on which a first circuit is mounted; a second circuit board on which a second circuit is mounted; a supporter; a flexible flat cable (200) disposed on the supporter and connecting the first circuit board and the second circuit board to each other, the flexible flat cable transmitting signals between the first circuit and the second circuit. The flexible flat cable is provided with a crease (210). The flexible flat cable is disposed such that the crease is in contact with the supporter.