Provided is a surgical device that can give an accurate feeling of depth even when the surgical device is inserted in a horizontal direction on left and right images. Therefore, a plurality of indicators are provided in a shaft section and an interval between the respective indicators adjacent to each other is set to an interval for always setting an interval between the respective indicators on the left and right respective images to be larger than a shift amount in a left-right direction of the corresponding indicators between the left and right images when an image of the shaft section is picked up in a state in which the shaft section is orthogonal to optical axes of left and right image pickup optical systems within a predetermined error range.