The invention discloses an integrated rotating member automatic centering drilling device which comprises a clamp body, wherein a clamping hole for placing a rotating member is formed in the clamp body; a movable drilling mechanism is further arranegd on the clamp body and comprises a power element and a drill bit connected with the power element; a rotary shaft of the drill bit and an axis of the clamping hole are positioned within the same plane; and through moving the drilling mechanism on the clamp body, the drill bit can carry out centering drilling on the rotating member clamped in the clamping hole. The integrated rotating member automatic centering drilling device is simple in structure and convenient to operate; a clamped position of a workpiece is matched with the drilling center of the drill bit in advance in design to enable the drill bit to always align at the axis of the clamping hole, and when the rotating member is clamped in the clamping hole, the axis of the rotating member naturally coincides with the axis of the clamping hole, the drill bit can directlly drill the rotating member, so that the step of finding the center of a prebored hole is eliminated, and the efficiency is greatly improved.