To provide an interior member and a disassembling method which can reduce the cost of disassembling.

The interior member 100 is fastened to a panel material with a screw 120, and includes a hole 101 through which the screw passes and at least one notch which is continuous to the hole and extends to the radial direction outside the hole. In the interior member, an input direction from an input position 106 to which a force is applied when the interior member is peeled off rom the panel material toward the hole is opposite to a cutout direction from the hole toward a tip of the notch. A relation between a diameter Ra of the hole, a length L of the notch and an outermost diameter Rb (Ra<Rb) of a washer to be used together with a head of the screw or the screw is Ra+L>Rb.