Abstract: A component posture information acquiring device acquires information of a posture of a component from a hand that holds the component arranged on a picking table and places the component at a supply position. The component posture information acquiring device includes a distance measure that is provided in a vicinity of a component holding part of the hand and measures a distance from the distance measure to the component, and a hardware processor that determines the posture of the component, in which the hardware processor determines a position of a region of interest to be used for determining the posture of the component based on information of an arrangement position of the distance measure when the distance to the component measured by the distance measure becomes a predetermined distance, and determines the posture of the component based on a feature amount in the region of interest.