Ceramic matrix composite manufacturing method and ceramic matrix composite

A ceramic matrix composite manufacturing method comprising:

• forming a zirconia-sol containing layer that contains zirconia sol, on fabric having an interface layer formed on a periphery of each of a plurality of ceramic-made fibers;
• impregnating the fabric having the zirconia-sol containing layer formed, with a polymer as a precursor, to form a body;
• supplying oxygen to the polymer included in the body;
• heating the body in an inert gas atmosphere to cause a reaction of the polymer to form a matrix;
• and
• heating the body in an oxygen atmosphere to remove the interface layer so that a vacancy is formed between the fibers and the matrix and a zirconia-containing layer is formed in vacancy-facing area by a given thickness from a surface of the matrix facing the vacancy, after supplying the oxygen and heating the body in the inert gas atmosphere, to generate a ceramic matrix composite in which the matrix is interposed between the fibers.