A component inspecting device inspects presence or absence of an abnormal state of two linear wires based on changes in the amount of received light of a first light ray and a second light ray received by a first light receiver and a second light receiver, respectively when a component is moved such that the two linear wires in the normal state block the first light ray and the second light ray in a posture wherein an arrangement direction of the two linear wires crosses optical axes of the first light ray of the first light projector and the second light ray of the second light projector. This device can detect an abnormality such as a bend or the like of linear wires by a simple configuration and a simple operation in a component having two linear wires which have axis directions parallel to each other and have different lengths.