In order to reduce the cracks and porosity, which always appear in the laser cladding composites of Ni superalloy and WC hard-phase, some methods were introduced in this paper: 1. uniform distribution of WC; 2. reasonable processing parameters; 3. application of a tough transition layer; 4. application of 0.1 wt-% mixed rare earth cerium; 5. laser tempering the heat-affected zone in order to obtain a tough structure. The experimental results indicate that the laser cladding coating has a uniform microscopic-structure and is free of cracks. Due to the transition layer, the micro-hardness curve of cladding is smmother than that without the soft layer.