The invention relates to a manufacturing method for ultrathin ceramic tiles, which comprises the following steps: a, manufacturing an isolated layer material; b, pressing: piling up powder for pressing; c, firing: firing a multilayer-structure adobe obtained in the step b at the temperature required for firing a ceramic blank, so as to obtain a multilayer-structure tile; and d: separating: separating layers of the multilayer-structure tile fired in the step c, so as to obtain the ultrathin ceramic tiles. The isolated layer is inorganic material powder which can not be fired or can not produce liquid phase at the firing temperature of the ceramic blank. According to the invention, the manufacturing method adopts the isolated layer material to separate the multilayer tile to a plurality of thin ceramic tiles, so that the ultrathin ceramic blank is ensured to have enough intensity, and the process is compatible with the existing production process and equipment of ceramic tiles; and in theory, the manufacturing method can be adopted to produce a product with any thickness, so as to improve the production efficiency in multiples and greatly reduce the production cost of the ultrathin ceramic tile.