Self-fracturing of fluid-saturated porous materials during drying processes is considered, and a physical model of this widespread phenomenon in drying problems is proposed. Main analysis deals with dispergate systems like ceramics, which after drying and calcinating become porous bodies with relatively high strength. The emphasis is placed on two problems: an increase of the cohesive force at the initial stage of drying and decohesion of a structure caused by drying-induced stresses.