The TiAlSiN coating was fabricated by laser cladding with circular and square spots on high-speed steel bit W6Mo5Cr4V2. The microstructure and mechanical properties of the coating were analyzed. The results show that BCC phase and some MC phase exist in the coating, and (Fe, Cr) solid solution is formed after laser cladding. Obvious cellular grains and many dispersed fine particles are formed in the coating, and irregular dendritic grains and carbides with granular are formed in the square spot coating, which improves the uniformity of the coating. The hardness of both the round and square light spot coatings is greater than that of the matrix. By comparison, the hardness of the square light spot coating is greater than that of the round light spot, which makes the overall distribution of the square light spot coating is more uniform. The average friction factor of circular and square spot coatings is 0.72 and 0.56 respectively. The circular light spot coating shows obvious adhesive wear characteristics, while the square light spot coating mainly shows abrasive wear characteristics.