Process for producing superconducting oxide material

The present invention provides a process for producing a superconducting material which can produce a large-area superconducting material having improved properties with high efficiency without ablation in the thermal decomposition of an organometal compound and the heat treatment of a superconducting substance. A process for producing a superconducting coating material, comprising conducting epitaxial growth through a step (1) of coating a solution of an organic compound of a metal, of which the oxide forms a superconducting substance, onto a support and drying the coating, a prebaking step (2) of thermally decomposingan organic component in the organometal compound, and a main baking step (3) of converting the thermal decomposition product to a superconducting substance. A laser beam isapplied in a period between step (1) and step (2) under such conditions that the intensity of the laser beam, the number of pulses, and the total energy amount of the laser beam satisfy a specific mathematical formula.