To promptly discharge a cooling medium vaporized in a cooling vessel of a superconducting coil from the cooling vessel.

In this laminated superconducting coil 21, a plurality of pancake coils 21a each formed by winding a superconductive wire 21b are laminated by being arranged in parallel to one another in the axis direction X, and the superconducting wires of the pancake coils arranged adjacently to one another are sequentially connected to one another. The superconducting coil is characterized in that a first terminal 27A connected to the terminal of the superconducting wire of the pancake coil arranged at one end in the axis direction, and the superconducting wire of the pancake coil arranged at the other end in the axis direction are extended to the arrangement position of the first terminal; a second terminal 27B is connected to the extended terminal; and the second terminal and the first terminal are arranged on the same end side in the longitudinal direction.