Abstract: To explore an effective joining method for YG6X cemented carbide, Ti/Cu laminated sandwich structured interlayers were designed. Active liquid phase bonding technology was employed to conduct joining experiments for the same material YG6X/YG6X with Cu/Ti/Cu as the interlayer and for the dissimilar material YG6X/45 steel with Ti/Cu/BNi2 as the interlayer, and they were compared with the brazing process with the BiNi2 brazing filler metal under the same process conditions. The shear strength and microstructure of the joints were systematically analyzed. The results show that the Ti/Cu laminated sandwich structured interlayer can achieve active liquid-phase diffusion bonding of YG6X/YG6X and YG6X/45 steel joints, and the shear strengths are higher than that of the BiNi2 brazed joints. Ti/Cu sandwich structured interlayer with near-eutectic composition can achieve good wetting of YG6X cemented carbide and effectively adjust the connection stress. The diffusion distance of Ti element into the YG6X cemented carbide matrix is approximately 9 μm. The reasonable configuration of the thickness of the intermediate layer Ti/Cu is the key to enhancing the joint strength.