Shielding member and the power transmission unit

To provide a shielding member and the power transmission unit capable of suppressing a decrease in power transmission efficiency. A shielding member 40 and the power transmission unit 1 is formed annularly around the axis X, is provided so as to surround the power transmission coil 20 in a position along the cross direction, the magnetic force generated by the electric power transmission coil 20 comprising a shield wall 41 for shielding. The shield wall portion 41, the spacing P of the wall surface 41a facing the cross direction is formed from one side in the axial direction to be wider toward the other side. .FIELD 5