In the paper, the effect of Ni content, WC grain size and Mo 2 C addition on WC–6.25wt%TiC–9.3wt%Ni cemented carbide were investigated to improve the properties of Ni-bonded cemented carbides. The results show that the decrease of Ni content will result in the decrease of transverse rupture strength and increase of hardness; with the decrease of WC particle size, hardness increases due to the refinement of WC grains, however, the transverse rupture strength decrease due to the decrease of Ni binder thickness; Mo 2 C proves to be an effective grain growth inhibitor. With the increase of Mo 2 C content, the WC grains are refined and the hardness and transverse rupture strength are improved. Generally, when the Ni content is decreased to 8.4wt%, 13.45μm WC is used and 1.2wt% Mo 2 C is added, a higher hardness and transverse rupture strength of 90.6HRA and 1900MPa can be achieved. The results obtained in this study extend the knowledge on Ni-bonded cemented carbide.