The invention relates to the technical field of a ceramic material, in particular to a method for synthesizing a ceramic material through microwave high-pressure water media. Raw materials are mixed and are then mixed with water in a high-pressure reaction kettle; microwave is used for heating, so that the temperature of water vapor in the reaction kettle is constantly raised along with microwave treatment temperature; the goal of improving the pressure in the reaction kettle is realized; meanwhile, the raw materials take a chemical reaction in water phases in the microwave heating treatment process, so that heat in the reaction kettle generates chemical heat under the effects of chromium powder, aluminum powder, graphite powder, silicon powder, manganese powder and the like to be combined with microwave heating, so that heat in the reaction kettle fast rises; in addition, water generates ionization and shows weak acid and weak alkali; the fast reaction of raw material ingredients is promoted; the flexibility of ceramic powder is improved; the activity of the ceramic powder is improved.