A rotary display hanger is provided, including a base, including a first receiving room and a hollow portion, the first receiving room being adapted for receiving a rotary device, the hollow portion being adapted for receiving the driving head; a position-limiting member, the position-limiting member and the base at least forming a second receiving room which is adapted for receiving the torque wrench; an index portion, received in the hollow portion, including a base portion being configured to connect with the driving head of the torque wrench and an identification portion protruding radially from the base portion, the identification portion being freely rotatable about an axis of the base portion together with the base portion and the driving head in the hollow portion; wherein each of the base portion and the identification portion is radially distanced from an inner face of the hollow portion.