Sintering technique via microwave energy for WC-11.5Co cemented carbides and the effect of heating rate on the densification, microstructures and hardness (HRA) were investigated. Cemented carbides with high densification and hardness can be achieved by microwave sintering. Within the heating rate from 10.4 to 61.9 oC/min, it has no visible effect on alloys’ microstructures and properties. The harness ranging from 88.5 to 89.5 is obviously higher than 87.6 of conventionally sintered counterparts and the hardness index of YG11C commercial products.