A component moving device comprising: a component supply section having a component supply surface where multiple components are placed in a scattered manner and a wall section configured to prevent the components from falling off the component supply surface; a holding tool configured to pinch and hold individually the components placed on the component supply surface with a pair of claw sections; a moving section configured to move the holding tool to a position above one of the components placed on the component supply surface and then move the holding tool from above the one of the components in an up-down direction; an imaging section configured to image the component supply section from above the component supply surface; a calculating section configured to calculate an angle (θ) at which a direction (D1-D3) in which the pair of claw sections pinches a pinching target component, which is a pinching target component to be pinched by the pair of claw sections, and an inner wall surface of the wall section intersect based on an image imaged by the imaging section; a setting section configured to set a pinching acceptable area, in which the components placed on the component supply surface can be individually pinched by the pair of claw sections while the holding tool is avoiding an interference with the wall section, so as to be narrower as the angle (θ) calculated at the calculating section becomes greater; a determining section configured to determine whether the pinching target component (W1-W3) is a pinching acceptable component, which can be pinched by the pair of claw sections of the holding tool while the holding tool is avoiding an interference with the wall section, the determination being determined based on the pinching acceptable area set at the setting section and the image; and a control section configured to control operations of the holding tool and the moving section so that the holding tool pinches and holds the pinching target component (W1-W3) which is determined to be the pinching acceptable component at the determining section. a component supply section having a component supply surface where multiple components are placed in a scattered manner and a wall section configured to prevent the components from falling off the component supply surface; a holding tool configured to pinch and hold individually the components placed on the component supply surface with a pair of claw sections; a moving section configured to move the holding tool to a position above one of the components placed on the component supply surface and then move the holding tool from above the one of the components in an up-down direction; an imaging section configured to image the component supply section from above the component supply surface; a calculating section configured to calculate an angle (θ) at which a direction (D1-D3) in which the pair of claw sections pinches a pinching target component, which is a pinching target component to be pinched by the pair of claw sections, and an inner wall surface of the wall section intersect based on an image imaged by the imaging section; a setting section configured to set a pinching acceptable area, in which the components placed on the component supply surface can be individually pinched by the pair of claw sections while the holding tool is avoiding an interference with the wall section, so as to be narrower as the angle (θ) calculated at the calculating section becomes greater; a determining section configured to determine whether the pinching target component (W1-W3) is a pinching acceptable component, which can be pinched by the pair of claw sections of the holding tool while the holding tool is avoiding an interference with the wall section, the determination being determined based on the pinching acceptable area set at the setting section and the image; and a control section configured to control operations of the holding tool and the moving section so that the holding tool pinches and holds the pinching target component (W1-W3) which is determined to be the pinching acceptable component at the determining section.