A dispersant for ceramics is a crucial chemical additive in the preparation of ceramic slips, primarily functioning to achieve uniform and stable dispersion of ultrafine ceramic powders (such as alumina or zirconia) in a liquid medium (typically water). In ceramic processing, micron or nano-sized ceramic particles, due to their large specific surface area and high surface energy, readily agglomerate into difficult-to-break hard aggregates. The dispersant adsorbs onto the ceramic particle surfaces through its active molecules, generating powerful electrostatic repulsion or steric hindrance effects. This effectively overcomes the van der Waals forces between particles, preventing their re-agglomeration. This process significantly reduces slurry viscosity, improves rheology, and increases solid content, thereby enabling the preparation of highly stable and homogeneous ceramic slurries. This ideal slurry state provides a solid foundation for subsequent processes such as slip casting, tape casting, or spray drying, ensuring uniform green body density and ultimately yielding high-quality sintered products with a homogeneous microstructure and excellent mechanical properties.