A good cooling is essential to stabilize any superconducting wire. Immersion of superconductive coil in liquid helium has been a prevalent cooling method for a long time. As an alternative of cooling way, hollow supreconductor is introduced recently. In this cooling method, pressurized fluid phase helium is passed through passage of the hollow conductor. Stability problem of the hollow conductor is quite different from that of the conventional superconducting wire. This paper gives stability analyses on the hollow conductor and points out several parameters, affecting stability, which cannot be found in the conventional superconducting wire.
