Provided is a wiring structure with which a module board of one mobile communication apparatus can be connected to a circuit board of another mobile communication apparatus by using an optimal wiring material. The present invention is provided with: a main board 2; a first module board 8; a first connector that can be fitted to a coaxial cable connector and a connector mounted on a flexible printed board and that is mounted on the first module board; a second connector 10 fitted to the first connector; and wiring materials 6a, 6b, 14a-14e that are attached to the second connector and electrically connect the main board and the first module board.