Dense TiB₂-TiC multiphase ceramics were prepared by pressureless sintering technique, starting as the powder mixtures obtained by high energy ball milling. The results show that the mechanical alloying was beneficial not only for the control of the microstructures and phase component of the TiB₂-TiC composites, but also for the formation of coherent interface between TiB₂ and TiC. The TiB₂-TiC composites sintered using the 48 h milled powder at 1800°C for 2 h have the optimum values of mechanical properties, such as densities greater than 98% of the theoretical value, higher bending strength (487 MPa), higher hardness (94.7, HRA), and fracture toughness (5.83 MPam^1/2).