Additive manufacturing (AM) is a promising manufacturing technology that has been applied on a range of materials to fabricate parts with bespoke structures. Among the diverse AM techniques, Direct ink writing is widely used to fabricate ceramic parts with complex structures and reliable mechanical properties. The aim of this thesis is to explore its application on the preparation of multi-material ceramic composites. Particularly, two variants of it, embedded printing and co-extrusion, are investigated in this thesis. The rheological properties required to print dense and crack-free ceramic samples are systematically studied as well as their effect on the microstructure. The mechanical performance of the resulting ceramic composites has been effectively improved through the selection of component materials and the design of the microstructure. Moreover, embedding printing technique can be used to produce ceramic microfluidic devices for thermal management.