A kind of Gd@C82 salt, Gd@C82/TBPA, was prepared through chemical oxidation. The Gd@C82/TBPA salt was characterized as being paramagnetic with an effective magnetic moment of 9.68μB. The Gd@C82/TBPA salt dissolves in many organic solvents and its high solubility will make it more applicable for use as a magnetic material.