Biomaterials are produced naturally or artificially using a various methods employing metals, polymers, ceramics or even some times composites. Especially for high load bearing orthopedic application like hip and knee joints the life expectancy of biomaterials is always increasing. In this work fabrication of a novel bio ceramics from orthopedic application with silicon nitride in zirconia matrix is developed. The Zirconia-Silicon Nitride composite is a novel material and it has been developed to combine the material advantages of zirconia and silicon nitride. The tradition powder forming process is used for the fabrication of the proposed Zirconia-Silicon Nitride composite in the form of pellets. Zirconia is added to the silicon nitride in the several wt% and compressed and sintered in the 1400°C. The Physical characteristics densities of the sintered pellets were determined by Archimedes principle and then compared with the theoretical density. The density of the composite was studied preliminarily to assess the structural stability of the composite. The bio-inertness of the composite was evaluated by using the DISC DIFFUSION ASSAY method. © Published under licence by IOP Publishing Ltd.