The traditional laser cladding sample analysis method requires pretreatments such as wire cutting and polishing of complex samples. This paper first analyzes the influence of Tungsten carbide content on the hardness of two dimensional gradient materials,and then uses laser induced breakdown spectroscopy to carry out the chemical characterization of two dimensional gradient materials. The study found that the material hardness and LIBS signal intensity increase along with the Tungsten carbide content. Both are highly linearly correlated,with linear correlation coefficients of 0.932 and 0.924,respectively. The research results show that the laser induced breakdown spectroscopy technology can be used in the analysis of laser cladding gradient materials,and can effectively overcome the complicated pre processing procedures required by traditional laser cladding sample analysis methods.