An electric wire fixing structure includes a first half hole part and a second half hole part formed by dividing an electric wire hole through which an electric wire is passed; an electric wire fixing part formed in a shape along the first half hole part when viewed in the axial direction of the electric wire hole, the electric wire fixing part extending from the first half hole part in the axial direction of the electric wire hole; and a fixing member wound around the electric wire and the electric wire fixing part together, so as to fix the electric wire to the electric wire fixing part.