The invention belongs to the application field of superconducting magnets, and in particular to a conduction cooling superconducting magnet based on a ReBCO spiral coating conductor sheet and preparation. The superconducting magnet is formed by overlapping superconducting sheets and conduction cooling sheets in sequence, wherein the superconducting surfaces of the superconducting sheets are cut into a spiral banded structure, and the conduction cooling sheets have functions of insulation and cooling. The magnet is cylinder-shaped after overlapping. The superconducting sheets are made of copper, the upper surfaces and the lower surfaces are coated with insulating varnish, and the connecting heads are connected with a cooling head of a refrigerating machine so as to provide a stable low-temperature environment for the magnet through cooling the conduction cooling sheets by the refrigerating machine. The conduction cooling superconducting magnet is convenient to operate, high in efficiency, low in cost and capable of continuously adjusting the operation temperature of the magnet.